Coriander Teriyaki Flank Steak

Source: Gourmet, December 2001
adapted by http://theresalwaysthyme.blogspot.com

1 teaspoon coriander seeds, coarsely ground in an electric coffee/spice grinder (I used ground because I was lazy!)
1 lb flank steak
1 1/2 tablespoons soy sauce
1 1/2 teaspoons packed brown sugar
2 - 3 teaspoons minced peeled fresh ginger
1 garlic clove, minced
1 teaspoon vegetable oil
1/4 cup fresh cilantro leaves (optional, to garnish)

Rub coriander onto both sides of the steak and put the steak on a large plate, or place it in a large Ziploc freezer bag to marinate. 
In a small bowl, stir together soy sauce, brown sugar, ginger, garlic, and oil. Pour marinade over steak, turning steak to coat. Marinate, turning occasionally, 10 minutes or more. I marinated it for about two hours! and then grilled to medium rare. You can also broil the steak or use a grill pan.