Sur Burger | James Beard Foundation

Ingredients

• 1 small red onion, halved and thinly sliced
• Salt and pepper
• 1 small jalapeño, trimmed and cut into thin strips
• 1⁄4 cup fresh lime juice
• 3 tablespoons plus 1⁄3cup extra virgin olive oil
• 1 medium yellow onion, finely chopped
• 9 cloves garlic
• 1⁄2 teaspoon ground cumin
• 1⁄2 teaspoon dried oregano
• 1⁄2 teaspoon cayenne
• 6 ounces cured chorizo, cut in chunks
• 1 pound ground beef chuck
• 3 ancho chiles—torn, seeds and stems discarded
• 1⁄4 cup walnuts
• 8 ounces creamy French feta cheese
• 4 Portuguese rolls, split
• 3 plum tomatoes, sliced
• Romaine lettuce leaves