Rockit’s Green Chile Burger

Ingredients

• 2 pounds ground black Angus beef, formed into 4 8-ounce patties
• 4 soft hamburger buns, such as butter buns
• 1/2 cup crumbled queso fresco
• 1/2 cup pickled red onions (see recipe)
• 1 ripe avocado, sliced
• 1 cup shredded romaine lettuce
• 1/4 cup green chile salsa (see recipe)
• salt
• freshly ground black pepper
• 1 large red onion, sliced into 1/8-inch rounds
• 1 tablespoon granulated sugar
• 1/2 cup red wine vinegar
• 1 tablespoon red wine
• 2 green chiles (such as Hatch, jalapeno or substitute serrano peppers)
• 1 poblano pepper
• 1 tablespoon chopped cilantro
• 3 tomatillos
• 2 tablespoons olive oil
• juice of 2 limes
• 1 teaspoon salt