How to Make Rainbow Jello

The next time you’re looking for a unique dessert idea, try making your own edible Jello rainbow. While the process is a little time-consuming, it couldn’t be simpler, and the finished product makes a fun, vibrant treat for kids and adults alike. All you have to do is layer different colors of Jello in a baking dish, wait for it all to set, then cut it into squares and watch your guests’ faces light up!

1 box each of red, orange, yellow, green, blue, and purple Jello, 3 oz (85 g)

whipped topping (optional)

1 canister plain unflavored gelatin, 16 oz (450 g) (optional)

1-2 cans sweetened condensed milk, (optional)

Makes one x dish of Jello

EditPreparing the Jello
Pick up several boxes of Jello in multiple colors. To make a true rainbow, you’ll need one 3 oz (85 g) box each of red, orange, yellow, green, blue, and purple Jello. However, you’re free to use any colors in whatever order you want.[1]
You may need to double or triple the amount of Jello you buy and use a larger serving dish if you plan on preparing the dessert for a large crowd. Alternatively, you could scale down the recipe by using only a portion of each box of Jello.

Rainbow Jello isn’t just a dazzling, delicious dessert—it’s cheap, too. All in all, this recipes shouldn’t cost you more than a few dollars!

Bring a kettle of water to a low boil. Fill your kettle with water and set it on the stove over medium-high heat. While it’s warming up, you can begin unboxing your Jello and gathering the other tools and utensils you’ll be using.[2]Jello dissolves and sets best when you use boiling water. However, you can also simply run some hot water from your tap if you don’t feel like waiting for it to boil.

Pour your first color of Jello into a medium-sized mixing bowl. Tear open the packet and shake the powder out into the bottom of the bowl. For a realistic-looking rainbow, you’ll want to start with either red or purple Jello and work your way through the color spectrum from there.[3]Make sure the bowl you’re using is roomy enough to hold of water along with the Jello powder. This will allow you to mix your ingredients more easily.

Add of boiling water and stir. Use a spoon or whisk to thoroughly mix the Jello powder into the hot water. As you stir, the powder will dissolve and form a thin, colorful liquid. Check to confirm that there are no bubbles, lumps, or dry pockets in your liquid Jello mix.[4]Pour your hot water into a liquid measuring cup before adding it your mixing bowl to make sure you’re using just the right amount.

Let the hot Jello mixture sit for 3-5 minutes to cool slightly before you continue.[5]

Stir in an additional of cold water. As you add the cold water, the liquid jello mix will begin to thicken somewhat. Keep stirring the mixture until the second cup of water has been completely incorporated.[6]Adding a few ice cubes to your cold water can help the Jello begin setting faster. If you decide to do this, make sure you only use of water to account for the extra volume.[7]
Be careful not to incorporate too much water, as this could affect both the flavor and texture of your finished Jello.

EditLayering and Refrigerating the Jello
Transfer the liquid Jello to a casserole dish or walled baking pan. Pour the mixture into the dish slowly to avoid making a mess. This will be the first layer of Jello in your rainbow. For best results, choose a dish that’s around x , which will allow each layer to come out about thick.[8]You could also pour your Jello into drinking glasses, parfait cups, or other small containers to make single-serving treats that don’t require cutting. For this recipe, you’d most likely need 12-15 individual containers.[9]
Be sure to grab a clean mixing bowl or rinse out the one you used before starting your next flavor to prevent your colors from bleeding into one another.

Chill the first layer of Jello in the refrigerator for 25-30 minutes. Slide your casserole dish or baking pan onto one of the upper shelves in your refrigerator where you’ll be able to keep an eye on it. Make sure the shelf you pick out is perfectly flat so the Jello sets in an even layer.[10]
There’s no need to wait for your Jello to set completely—you just want to leave it in long enough to let it solidify to the point where you can add another layer without the colors mingling.

If the shelf you use is crooked, your Jello layers may come out thicker on one end than the other, which could throw off the look of your rainbow.

Spread whipped topping between the layers if you want to add contrast. If you like, you can spoon of whipped cream onto each layer of Jello after it sets. This will make the colors in your Jello rainbow pop even more and give it an extra sweet, creamy finish.[11]For the sake of efficiency, use a tub of whipped topping rather than a spray can, which will take longer to apply evenly.

Another option is to use plain, unflavored gelatin to make thin white layers that blend better with the Jello. Mix 2 oz (56 g) of gelatin with of sweetened condensed milk, of hot water, and of cold water to make a single layer. Allow each layer to set for 20-30 minutes before adding your next color.[12]

Repeat the process with your other Jello colors. Once your first layer has had time to firm up, mix up your next color and pour it into your dish directly on top of your first color or layer of whipped topping. You’ll do this for each color you want to include.[13]Don’t forget to alternate with your whipped topping or plain white gelatin if you’ve decided to separate your layers.[14]
To save time, start mixing your next color of Jello while the previous layer is chilling in the refrigerator.

You can make as few or as many layers as you like. A full rainbow will have 6 uniform layers, but you could stack up as many as a dozen, as long as you have a big enough dish, or stick to the primary colors (red, yellow, and blue) to keep things simple.[15]

Place your rainbow Jello in the refrigerator 2-3 hours to finish setting. After you’ve assembled all of your layers, cover the dish with a piece of plastic wrap and stick it back in the refrigerator one last time. This time, let your Jello sit for the full amount of time specified in the directions.[16]You also have the option of simply leaving your finished Jello rainbow in the refrigerator until you’re ready to serve it, since you’ll need to keep it cool anyway.

Cut your rainbow Jello into squares before serving it. Use a table knife to carefully slice the single sheet of Jello into precise squares. Aim to make each square the same size so you won’t be left with any thin slivers or oddly-shaped pieces. Enjoy![17]
If you’re serving bigger kids and adults, measure your squares to be about apiece. For smaller children, servings should be plenty.

Cover your leftover Jello and store it in the refrigerator. It should stay good for a week or longer.[18]

Add small pieces of real fruit to your Jello to make it more nutritious.

If you’re a vegan, substitute a plant-based flavored gelatin made from agar, carrageenan, or vegetable gum for ordinary Jello.[19]
Rainbow Jello can make an attention-grabbing dessert for birthdays, baby showers, summer pool parties, and other colorful occasions.

EditThings You’ll Need
Casserole dish or walled baking pan

Medium-sized mixing bowl

Liquid measuring cup

Spoon or whisk


Tea kettle

Plastic cling wrap

Drinking glasses or similar small containers (optional)

Cookie cutters (optional)

EditRelated wikiHows
Make Easter Egg Jello Shots

Make Cosmopolitan Jello Shots

Suspend an Object in Jello

Make Papaya Sorbet

EditSources and Citations
EditQuick Summary
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Today in History for 26th February 2019

Historical Events

1881 – -27] Natal: British troops under Major General Colley occupy Majuba Hill
1918 – Stands at Hong Kong Jockey Club collapse and burn, killing 604
1987 – USSR resumes nuclear test at Eastern Kazakh/Semipalitinsk USSR
1991 – Signs of Iran crude now an option for US refiners, but no imports from Iran likely in near future
2012 – 61st NBA All-Star Game, Amway Centre, Orlando, FL: West beats East, 152-149; MVP: Kevin Durant, OKC Thunder, F
2013 – A flexible battery capable of being charged wirelessly and folded and stretched is developed

More Historical Events »

Famous Birthdays

1564 – Christopher Marlowe, English poet and dramatist (Dr Faustus), born in Canterbury, England (d. 1593) baptism date
1887 – Stefan Grabinski, Polish writer (d. 1936)
1909 – King Talal of Jordan (d. 1972)
1913 – George G Barker, English poet (Calamiterror, Anno Domini)
1970 – Meeno Peluce, Dutch actor (Bad News Bears), born in Amsterdam, Netherlands
1970 – Katie O’Neill, American actress (Together We Stand), born in Los Angeles, California

More Famous Birthdays »

Famous Deaths

1814 – Johan Tobias Sergel, Swedish sculptor, dies at 73
1981 – FC Terborgh, [Reijnier Flaes], lawyer/writer (Turkish War), dies at 79
1994 – William Melvin “Bill” Hicks, American stand-up comedian and social critic, dies of pancreatic cancer at 32
1996 – Daniel John Chapman Cunningham, physiologist, dies at 76
1996 – Mieczysław Weinberg [Moisey Samuilovich Vaynberg], Polish-Soviet composer, dies from Crohn’s disease at 77
2017 – Dimiter Khristov, Bulgarian composer, dies at 83

More Famous Deaths »

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How to Dry Wood Fast

Air-drying lumber typically takes at least a year per inch of thickness, which is far too long for people that want to do a quick woodworking project. Although drying times depend on things like moisture levels, wood species, and lumber thickness, you always have the option of microwaving small pieces of wood or taking a few steps to speed up the drying process for larger pieces of wood.

EditUsing a Microwave Oven for Small Wood Pieces
Weigh your wood samples using a postal scale. Electronic postal or pocket scales can be purchased from office suppliers and big-box stores. Set it to measure grams, place your wood onto it, and take note of your wood’s weight. If you’d like to keep your scale clean, place a container onto the scale, hit “Tare,” and then place the wood in.[1]
Use a scale that has an accuracy within 0.1% for the best results. Otherwise, accuracy should be at least within .

Measure the moisture content (MC) with a moisture meter. For pin-type moisture meters, press the 2 tips into the wood and activate it for the moisture reading. For pinless meters, press the base of its scanning plate against the wood and turn the meter on. Record the moisture content, which will be a percentage between 0 and 100.[2]
Purchase moisture meters from home hardware stores and online suppliers.

Microwave 15% to 25% MC wood at the lowest setting for 45 to 60 seconds. Place 3 to 5 paper towels onto the microwave oven’s plate and place your wood on top. Most ovens come with a “Low” setting and a “Defrost” setting that is slightly higher. Set it to “Low” and look out for smoke—this is a sign that you have burnt away some of the wood weight and volume and any moisture measurements will be inaccurate.[3]
Never let wood pieces touch if you’re heating multiple samples or they can light on fire.

Heat 30% MC or above wood for 1.5 to 3 minutes at the second-lowest heat level. For most microwaves, the next heat level above “Low” is “Defrost.” Layer 5 paper towels onto the microwave oven’s plate, place your wood on top, and set your microwave to “Defrost.” If you don’t mind waiting, you can set it to the lowest setting, and wait about 4 minutes instead.[4]
If you smell smoke or burning on “Defrost,” switch to the “Low” heat setting.

Weigh your samples after the first round of heating. Following the first round of heating, weigh your samples on the scale and record the weights. When drying wood, you will notice each piece loses weight, which is a sign that moisture is leaving. The goal is to continue heating your wood pieces until there is no weight change and each of their moisture contents is stable.[5]
Remember that different types of wood dry at different rates. Don’t be surprised if some pieces lose moisture slower or faster than others.

Continue heating your wood and weighing it until there are no weight changes. Heat the wood in intervals of 45 to 60 seconds with a 1-minute rest in between each. For highly accurate scales, you shouldn’t be able to detect variation more than 0.1 gram once the drying process is done. For gram scales, stop when you get about 5 or 6 readings that are the same.
Moisture meters can also detect moisture content, but the weight method is the most accurate.

Calculate the moisture content following the final heating by using the following formula: (Wet Weight – Oven Dry Weight / Over Dry Weight) x 100.

EditUsing a Conventional Oven for Medium Pieces
Preheat your oven to and monitor its temperature. After setting the heat, place one kitchen rack on the bottom and another in the center. Now, place a large baking pan on the bottom rack and put an oven thermometer onto the center rack in one of its far corners.[6]
If your oven doesn’t let you set the temperature to , set it to the closest increment, such as .

Adjust your oven settings until it hits . Monitor your oven thermometer every 10 minutes. If it’s too high, lower the temperature, and if it’s too low, increase it. Always adjust the temperature by the smallest increments for optimal accuracy.[7]
Turn on your kitchen fan if it has one—this will ensure optimal airflow.

Place your wood onto the center rack for 1 hour. Be sure that none of the pieces are touching. For smaller pieces, lay them perpendicular to each rung of the oven rack to prevent them from falling through.[8]
Continue monitoring the oven thermometer every 10 to 15 minutes and adjust temperature accordingly.

Test your wood’s moisture content (MC) after 1 hour and reheat for 15 minutes increments as necessary. After 1 hour has passed, remove 2 to 3 wood pieces of varying sizes from the oven. Measure their moisture content using a moisture meter. Continue heating the pieces for 15-minute intervals until the desired MC or until the moisture levels do not decrease anymore.[9]
Purchase moisture meters from home hardware stores and online suppliers.

EditSpeeding up the Drying Process for Large Lumber
Process your logs as fast as possible. If you have just cut down a tree, make the wood into lumber as soon as you can. Processing opens up the wood and helps the drying process, which can prevent stain and rot from affecting the wood.[10]

Store your wood in a shaded location with ample airflow. Try and find an indoor location like a hayloft or shed or an outdoor location that is in the shade. Avoid locations like garages which likely don’t have enough airflow. Never store wood in the basement or inside boxes as they dry, they definitely won’t have enough airflow.[11]
Remember that your wood needs to dry in an area with a similar moisture content that the finished product will be exposed to. For example, if you plan to use the wood to make a chair that will be placed in a dry area of your home, store it in an area with similarly low moisture content

Point an electric household fan toward your wood between your cutting sessions to improve airflow. This circulation will help your wood dry in at least half the time that it normally would.

Seal off the ends of each piece of lumber immediately after cutting to prevent moisture decay. Exposed ends can lead to drying that is too fast, which paves the way for end-grain cracking and splits. And since moisture escapes wood 10 to 12 times quicker from the ends, leaving them exposed is damaging to the wood. Apply paraffin wax, shellac, polyurethane, or latex paint to the ends in a uniform manner so that both are completely covered. Try to do so as soon as possible—within minutes—for the best results.[12]
Purchase specially formulated end grain sealers from woodworking or home hardware stores if you don’t mind paying a bit more money.

Stack your lumber uniformly to expose all sides to airflow. When you’re cutting your lumber, cut the pieces to the same lengths and thicknesses. Afterward, these equal dimensions will make it easier to stack them in a manner that exposes each side to air. Use small pieces of wood, also known as stickers, to create space between each side and increase ventilation.[13]
Use spacers every for thinner pieces and or spacing for thicker pieces.

Cover the top of your wood with a tarp or plastic sheeting. Don’t cover the entire pile of wood to the ground—this will hold in moisture. By just covering the top, you can ensure that each piece is adequately shaded without trapping moisture.[14]
Skip this step if you’re storing your wood indoors or somewhere with adequate shade.

Measure the moisture content (MC) of your wood with a moisture meter. If you’re using a pin-type moisture meter, press the 2 tips of the device into your wood. Afterward, turn it on and examine the moisture reading. For pinless meters, press the base of the scanning plane to the wood and activate it. Moisture readings are a percentage between 0 and 100.[15]
Buy both types of moisture meters from online suppliers and home hardware stores.

When microwaving multiple pieces of wood, don’t heat multiple pieces of varying moisture contents.

Don’t rush—more cycles at lower heat is easier on the wood than fewer cycles at high heat.

Don’t use high-heat microwave settings or you risk starting a fire.

Use oven or work gloves when handling heated wood.

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