John Meyer’s catfish was an instant hit when he introduced it at his first restaurant, the Retreat, in the historic Pullman district. That was 1992, and 30 years later, the catfish is the top seller at BJ’s, his current restaurant. The fish, which comes with a choice of sides like red beans and rice, cornbread dressing, and macaroni and cheese, consists of a whole fillet that’s almost twice the size of your hand. An assertively tangy flavor penetrates each crunchy bite; that’s thanks to a combination of hot sauce and mustard, which are blended right into the luscious herbed-breadcrumb-and-cornmeal coating that the fish is deep-fried in. $14.49; 1737 E. 95th St., South Deering