Combine turkey through salt/pepper. Mix well and form into patties. Heat grill to medium-high heat and cook burgers for 4-5 minutes on each side or until cooked through. Top with shredded cheese and let melt (optional). Remove from grill.
Combine cider vinegar, sugar, mustard, turmeric and salt in a saucepan. Bring to boil and boil for 3 minutes. Remove from heat and let cool. Combine corn kernels, green pepper, onion, crushed red pepper and vinegar mixture in medium bowl. Stir well. Refrigerate until ready to eat.