In a bowl, add 2 Tbsp of dish soap and 1/4 c. of water. Add food coloring or Colorations Liquid Watercolors (we used Liquid Watercolors here) to the mix if desired. Mix on the highest possible setting for 1-2 minutes. Your foam should be able to form stiff peaks that hold their shape. Scoop it out into your container and repeat as necessary until you have the desired amount of foam!