In large Dutch oven, heat oil over medium-low heat. Add buffalo, 1/2 teaspoon salt and pepper; cook until no longer pink (about 10 minutes), stirring occasionally. Add remaining salt, stir-fry mixture, corn, diced tomatoes and salsa; bring to a boil, reduce heat and simmer for 15 minutes. Add black beans; simmer 10 minutes longer. Garnish with sour cream, green onions and shredded co-jack cheese