Carne Asada Marinade

Name: Carne Asada Marinade
Ingredients: 1.5 pounds skirt or flap steak; 1/4 of an onion, cut into 1/4-inch strips; 1 Tablespoon minced garlic (or 1 teaspoon garlic powder, not garlic salt); 2 Tablespoons lime or lemon juice; 1-1 +1/4 teaspoons kosher salt; 1/2 teaspoon sugar; 1/4 teaspoon black pepper; 1/2-1 teaspoon cumin; 1 teaspoon ground achiote (aka annatto) for color and earthiness (paprika will work in a pinch); 1/2 teaspoon chipotle powder for smoky heat; 3-4 Tablespoons chopped cilantro (this is a great use for the stems); 1 Tablespoon oil