Limited buffet hours. Most Indian buffets are lunchtime only, and the restaurant is open, say, 11am-1pm, and then closes until dinner. Indian buffets are often leftovers from last night's dinner, too, so there's a limit to the amount of food that they won't cook more.

Size of plates, bowls, glasses. This is an easy one, and you can use it to go on a diet. If you have large plates or bowls, throw them out and get small-capacity dishes. Buffets will make you use a certain size plate, and so each trip you can only pick up so much food, and this helps you notice that you feel full before taking more.

You may also be required to use a clean plate each time you dip into the buffet. This might have various effects on how you regard the food you took originally.