Arepa con Carne Asada (Arepa with Colombian-Style Grilled Beef)

Ingredients

For 4 servings

• 4 cooked arepas
• 2 pounds skirt steak (trimmed and cut into 4 equal portions)
• 1/2 cup finely chopped onion
• 4 garlic cloves (minced)
• 2 scallions (finely chopped)
• 1 teaspoon ground cumin
• ½ cup beer
• 1 tablespoon vegetable oil
• Salt and black pepper
• 1/4 cup fresh cilantro