True geniuses know that the same soda from different fast food restaurants will taste totally different based on the carbonation, what it's paired with, and, of course, the ice. Much debate has gone into what makes a good fast food ice shape, but it seems like it's actually the SIZE of the ice that matters. Well the brilliant users of TikTok seem to have cracked the code onhow to make fast food ice at home, and it only involves one little Amazon order. You may have noticed people on TikTok have a thing about fast food, or food in general. It may look like a simple silicone ice cube tray, but it actually produces the smallest little cubes you ever did see.