In a large bowl, combine KnorrŪ Onion Soup Mix, beef, water, chili powder, cumin and oregano; mix well. Divide into 6 equal portions. On a baking sheet pat each portion into a 5-inch 12 cm thin, round patty. Place one piece of cheese on each patty. Fold edges of meat over the cheese, pressing firmly in centre to seal completely. Chill 30 minutes or overnight. In a small bowl, combine salsa and mayonnaise; chill until ready to serve. Grill patties over medium-hot coals for 6 to 7 minutes on each side or until no longer pink inside. Place cooked patty on the bun and add lettuce. Top with salsa mayonnaise and coriander to serve.
