. Storage: If making ahead, store in an airtight container for up to a week. Sponges can also be frozen before assembly. 2. Creating the "Pool" To turn a cake into a pool, you need to create a hollowed-out area for the "water": Hollowing Out: Use a serrated knife to carefully cut and scoop out a shallow rectangle or circle from the center of the top cake layer, leaving a border of about 2 inches on all sides. The Water: Jello Method: Fill the hollowed-out section with blue-colored gelatin (jello). Icing Method: Use buttercream or icing tinted with blue food coloring. Corn Syrup Method: Spread a mixture of light corn syrup and blue dye across the cake for a glossy, water-like finish. 3. "Noodler" Decorations "Pool noodlers" (small pool noodles) are essential for the theme. You can create them using different materials: 10 sites Annabel Karmel's Swimming Pool cake Dive right in and enjoy this yummy swimming pool party cake madeformums.com Swimming Pool Cake Sorry, no swimming in the cake....\r\nMy swimming pool cake cutoutandkeep.net Formula 1 Cake Design This Formula 1 Cake is perfect for petrol heads and lovers of cars! supperinthesuburbs.com Show all Candy Noodles: Use