Grilled Korean-Style Steaks with Spicy Cilantro Sauce

For our Korean Wine & Dine event, my friend Howard prepared this dish. It's an excellent way to prepare steak with additional flavor. The cilantro sauce definitely puts it over the top but if you don't like cilantro, the steak alone is amazing...

Grilled Korean-Style Steaks with Spicy Cilantro Sauce
adapted from Gourmet

3/4 cup plus 3 tablespoons soy sauce
1/4 cup medium-dry sherry
3 tablespoons sugar
1 1/2 tablespoons plus 1 1/2 teaspoons minced garlic
1 tablespoon plus 1/2 teaspoon Asian sesame oil
1 teaspoon dried hot red pepper flakes
6 (1-inch-thick) boneless beef top loin (strip) steaks, about 3/4 pound each
3/4 cup chopped fresh cilantro (including roots and stems)
1/3 cup vegetable oil
1 tablespoon fresh lime juice
1/2 teaspoon minced seeded fresh habanero or serrano chile (optional)
1 (4-inch-long) fresh hot red chile, chopped (optional)

Stir together 3/4 cup soy sauce, sherry, sugar, 1 1/2 tablespoons garlic, 1 tablespoon sesame oil, and red pepper flakes in a 13 by 9 by 2-inch baking dish until sugar is dissolved, then add steaks, turning to coat. Marinate steaks, turning once, for 1 hour.

While the steaks marinate, mix together cilantro, vegetable oil, lime juice, remaining 3 tablespoons soy sauce, remaining 1 1/2 teaspoons garlic, remaining 1/2 teaspoon sesame oil, and chile if using. Set aside.

Heat grill to high heat, and when ready, grill steaks 3 to 4 minutes per each side for medium-rare. Transfer steaks to a cutting board and let stand for 5 minutes. Slice crosswise into 3/4-inch-thick slices and then top with some sauce. Serve remaining sauce on the side.