1-1/2 cups coarsely chopped fresh flat-leaf parsley
1/3 cup coarsely chopped fresh mint
3 Tbs. coarsely chopped fresh rosemary
8 medium cloves garlic, peeled
1/4 cup fresh lemon juice (from 2 medium lemons)
1/4 cup soy sauce
Kosher salt and freshly ground black pepper
1/2 cup extra-virgin olive oil
2 flank steaks (about 3 lb. total), trimmed of excess fat
1 English cucumber (about 3/4 lb.)
1 cup plain yogurt, preferably Greek
1 tsp. minced garlic
1 tsp. cumin seeds, toasted and lightly crushed with a mortar and pestle or spice grinder
1 tsp. finely grated lemon zest
1/2 tsp. fresh lemon juice
1/2 Tbs. extra-virgin olive oil
Freshly ground black pepper
Put the steaks in a nonreactive baking dish large enough to hold them both. Pour the marinade over them and turn to coat. Cover and refrigerate for at least 4 hours or overnight, turning occasionally.
Remove the flank steak from the marinade, wipe off any excess, and season generously with salt and pepper. Grill the steaks, covered, until grill marks form and the steaks have a nice brown sear, 5 to 6 minutes. Flip the steaks and continue grilling until grill marks form on the other side and the steak is cooked to medium or medium rare, 5 to 7 minutes more. Let rest 10 to 15 minutes.
Recipe inspired from Fine Cooking.