Carne Asada Mexican Street Tacos

Ingredients

• 2 pounds carne asada
• 1 tablespoon cumin
• 1 tablespoon kosher salt
• 2 teaspoons garlic powder
• 1 teaspoon cracked pepper
• 3 tablespoons canola oil
• 1 serrano pepper sliced
• 1/2 Roma tomato diced
• 1/2 white onion finely diced
• 8 ounces Dos Equis Beer
• 32 tortillas street taco
• 1/2 cup white onion diced, for garnish, optional
• 1/2 cup cilantro roughly chopped, for garnish, optional