X-ray Jelly Cool, clear jelly. By Guest Contributor March 22, 2011 Dessert Preparation Time Cook Time Servings0Ingredients1 packet of plain vegetarian jelly mix1 packet of mini white marshmallowsAs much water as you need to make up the jellyInstructions Step 1: Make up the jelly with the water. Step 2: When still runny, stick the white marshmallows into a skeleton shape with a little water. Step 3: Press the skeleton down to the bottom of the bowl. Step 4: Place in the fridge until set. Step 5: Enjoy your clear, X-ray jelly.