1/2 pound fresh asparagus, cut into 1" pieces
1 tablespoon brown sugar
2 tablespoons cooking oil, divided
10 ounces lean flank steak
1 large garlic clove, finely chopped
1/2 teaspoon ground ginger
1/2 cup chopped red bell pepper
1 teaspoon crushed red chile flakes
1/2 large red onion, thinly sliced
Salt & pepper
1/3 cup soy sauce
8 oz. package udon noodles
3 tablespoons cooking wine