Step 1

Prepare the Watermelon Bowl: Slice the watermelon in half lengthwise. You'll only need half of it for this recipe. If your halved watermelon is not balanced place it in a bowl, or on a pan with foil placed around the sides for support. Scoop out the watermelon flesh from the half you'll be using for your jello bowl, leaving the rind intact. Poke the inside of the watermelon rind with a fork to create small holes for the jello to stick to. Next, dry the inside of the rind with a clean kitchen towel or paper towel to help the jello adhere.

Step 2

Prepare the Mixed Fruit: Clean the fruit, leave the berries whole, and cut the larger fruit into chunks. Next, dry with a cloth or paper towel. Add the mixed fruit to the watermelon bowl, filling it one to two inches to the brim, refrain from packing down the fruit so that the jello has sufficient room.

Step 3

Make Watermelon Juice: Blend the watermelon flesh in a high-speed blender until smooth. Strain the blended watermelon using a nut milk bag, fine mesh strainer, or cheesecloth to extract the juice.

Step 4

Prepare the Jello Mixture: In a pot, combine the watermelon juice, agar-agar powder, and lemon or lime juice (if using).For every cup of watermelon juice, add 1.25 tsp of agar-agar powder and 1 tsp of lemon or lime juice (if using). Mix the ingredients well.

Step 5

Cook the Jello Mixture: Place the pot on medium-high heat, stirring continuously. Bring the mixture to a boil for five minutes. Then, remove the pot from the burner and allow the jello to cool down for 30-40 minutes, giving a quick stir every other minute so that the jello does not congeal at the top.

Step 6

Fill the Watermelon Bowl: Pour the liquid jello into the prepared watermelon bowl, filling it to the brim. Any extra jello can be placed in a separate container.

Step 7

Set the Jello: Place the watermelon bowl in the refrigerator. The jello will be fully set in two-three hours.

Step 8

Serve: Once the jello has set, using a sharp knife gingerly slice the watermelon jello fruit bowl into portions and serve.