
So Starbucks is introducing a new size -- the trenta. The new cup size holds 916 ml of liquids; the average stomach holds 900 ml.
Here is an illustrated guide from the Huffington Post. And of course, there is still the Big Gulp, Super Big Gulp, Double Gulp, and Team Gulp. So who buys these? Why or why wouldn't you buy a portion size larger than your stomach? Does the restaurant industry have a responsibility to help us with our portion size and obesity epidemic?