The real reason we're fat? We eat too much.
I realized this when I went to Iceberg Drive Inn (known locally for its thick shakes) for the first time the other day since I've been back from Europe. This is the ice cream at Iceberg:
And this is the ice cream at a popular gelato shop in France, Amorino.
Both ice creams are shown in the smallest size offered. Anyone else notice a ludicrous size difference? The American small is an overflowing 20-30 ounce cup while the European small is roughly the size of a tennis ball.
Mystery solved. Sorry Pollan.