I think part of the “logic” behind the large portioning is that they have to somehow justify the high prices they are charging for a dish. People don’t mind paying more for dishes on which they get more food (even if it is food that costs pennies to put on the plate, like pasta or rice). In most cases, people would be harder pressed to pay that same price for a smaller portion (unless you are at a REALLY gourmet place, where the logic seems to go the other direction).

I think that the portions we are given in these cases train us to believe that we need to actually eat this much. Many of us (including myself) overeat because we have no idea what a good portion looks like!

But if more restaurants were willing to offer half-portions (with commensurate prices), I would definitely purchase them.

Another point to consider is that some people are frustrated with having to choose between overeating, taking home leftovers or wasting food. I’ve spoken with many people who just don’t like leftovers. You and I don’t have that problem. But those who do, resent choosing between three unattractive options at restaurants.

A better model, for most people, would be getting a smaller portion for less money. So T.G.I. Friday’s Right Portion, Right Price menu is a step in the right direction.