Campfire carne asada tacos recipe

Ingredients

• 2 med white onions
• 3 fresh jalapenos
• 2 bunches fresh cilantro
• 1 (4 ounce) jar chopped garlic
• 3/4 cup lime juice
• 1/2 cup olive oil
• 1 tablespoon salt
• 2 pounds flank steak or skirt steak
• 3 tomatoes
• 4 avocados
• 2 cups Mexican mix grated cheese
• 10 flour tortillas