Black Bean Burger With Salsa Fresca And Avocado Crema

Name: Black Bean Burger With Salsa Fresca And Avocado Crema
Ingredients: FOR THE BLACK BEAN BURGERS; ⅓ cup olive oil; 1 medium yellow onion, finely chopped; 6 cloves garlic, finely chopped; 2 poblano chiles, stemmed, seeded, and finely chopped; 2 tsp. ground cumin; 2 tsp. paprika; 1 tsp. ground coriander; 1 tsp. dried oregano; 1 chipotle chile in adobo sauce, finely chopped; ½ cup breadcrumbs; 2 eggs; 2 (15-oz.) cans black beans, rinsed, drained, and mashed; Kosher salt and freshly ground black pepper, to taste; ½ cup finely ground cornmeal; FOR THE SALSA FRESCA; 3 medium tomatoes, cored, seeded and finely chopped; 2 cloves garlic, minced; ¼ cup red wine vinegar; 2 tbsp. finely chopped cilantro; FOR THE AVOCADO CREMA; ½ cup sour cream; 2 tbsp. freshly squeezed lime juice; 2 avocados, halved, pitted, and peeled; 6 hamburger buns