Steak tacos with green sauce

The green sauce makes these steak tacos look and taste gourmet. We adapted the recipe from a Cooks Illustrated one for indoor steak tacos.

We took at 1.5-pound sirloin, marinated it in half the recipe of green sauce, grilled it, sliced it and served it on warmed whole wheat flour tortillas with homemade guacamole and sour cream.