If you're using large, common globe eggplant, which can be more bitter than other varieties, salting beforehand can reduce bitterness. To salt: Place prepped eggplant in a large colander over a bowl and mix with 1 tablespoon salt. Top the eggplant with a plate weighted down with cans. Let sit for 30 minutes to 1 hour before using. Rinse well with cold water, then dry with paper towels.
It's not always easy to find lean lamb, but it's easy to grind your own in a food processor. Choose a lean cut, such as leg or loin, trim any excess fat and cut into 3/4-inch pieces. Pulse in a food processor until uniformly ground, being careful not to overprocess. Or ask your butcher to grind a lean cut for you.
1 vegetable, 4 lean meat, 3 fat