Food trucks, the next step up the evolutionary ladder from the traditional sidewalk food cart.

Every week on Grub Street, a chef is asked to describe a favorite recently eaten restaurant dish. The following week, that dish’s chef nominates another memorable comestible, and so on—hence the name, Food Chain. Here we play the same game with bartenders.

The two camps of the burgeoning food-truck phenomenon: stable and nomadic.

Sharon Pachter and Charles Kiely, owners of the Grocery restaurant, 288 Smith Street, Brooklyn.

Public-radio listeners look for romance at the WNYC young singles mixer.