system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do calories differ between cooked vs uncooked rice when rice only uses water?
gpt
Because the weight changes. If you take 100 grams of uncooked rice, it's going to have 350 calories or so. When you take those 100 grams of uncooked rice and cook it, it's still going to have the same 350 calories, but it's now going to weigh 200 grams. So the cooked rice has fewer calories per 100 grams because of the water that gets absorbed. The water has weight but no calories.