Hi that is really not a silly question. Im sure more of us wondered the same thing. Depending on how big your ice shavings.. but one and a half cup is more or less equal to one cup of water. The ice also helps for the swelling of the new stomack where it was cut. So go ahead and eat up..it is only good for you. Also don't worry if you accidentally swallow a small piece, it will melt soon after reaching the stomack. No harm done. All of the best on your journey...