This young entrepreneur is looking for a good place on Oaxaca's Zócalo to set up his mobile emporium. His minimalist facility consists of a wheelbarrow filled with fruit, a folding stool, a roll of plastic bags and three rusty tin cans in different sizes,the latter for measuring out $5, $10, or $15 pesos worth of fruit. Reassuringly, he has lined the wheelbarrow with plastic, to protect the food from traces of manure or whatever else was last carried in it.

I bought a $5 peso bag of the fruit, which he called nanches. They're the size of raspberries, but berries they're not, because they contain just one stone. I think they're drupes; like cherries or plums. The seeds even look like a cherry stones.

Marne, here holding my baggie for the camera, says they taste like a cross between an orange and a banana, and I have to agree.

A benefit of traveling in less-developed countries is the opportunity to taste fruits and vegetables I never run into in big chain supermarkets. Even adventurous stores like Austin's Central Market aren't going to carry nanches. Can't move enough of them. Gotta train all the checkers: "Now these here are your nanches—$1.29 a pound this week. Produce code #7873."

Even if Safeway's buyers knew about them, they're just too much trouble for a big corporation. No commercial growers. Not enough volume. But they're just right for a guy selling out of a wheelbarrow in Oaxaca.