If your answer is a half gallon you are way behind the times. If you didn't notice, the long standard 2 quart ice cream container begot the 1.75 quart container more than a few years ago. Now we are talking 1.5 quarts!! Read more from the Consumerist.
Calling all food editors!! Hey, this is important stuff. Research is needed to see if this implicit inflation has reached the Burgh yet.