Ancho Hazelnut Burgers with Avocado Lime Crema - Sutter Home Family Vineyards

Ingredients

• 1 California Avocado
• 1 tablespoon lime juice
• 2 teaspoons salt, 1/2 teaspoon for Crema and 1 1/2 teaspoons for patties
• 2 tablespoons chopped cilantro
• 1/4 cup sour cream
• 2 teaspoons ground ancho chile or ancho chile powder
• 1 1/2 teaspoon unsweetened cocoa powder
• 1 teaspoon cumin
• 1/4 teaspoon cinnamon
• 1 tablespoon tomato paste
• 1/4 cup Sutter Home Zinfandel
• 2 pounds ground sirloin
• 1/3 cup hazelnut meal
• 1/4 cup Colavita olive oil, plus extra for greasing grill rack
• 2 yellow onions, peeled and cut in thick rings
• 6 seeded hamburger buns, split