1 tablespoon egg white

1 tablespoon rice wine or dry sherry

2 teaspoons cornstarch

1 teaspoon salt, more to taste

1/2 teaspoon black pepper

1 pound boneless leg of lamb or lamb shoulder, cut into strips about 1/2 inch by 2 inches

3 tablespoons vegetable oil

2 tablespoons cumin seeds, lightly cracked in a mortar or grinder

2 tablespoons whole dried red chili peppers, about 2 inches long

4 scallions, white and green parts only, cut on diagonal into 1-inch lengths

Sesame oil, for seasoning.