Hot Swiss Tuna(Microwave)  
["4 hamburger buns", "1 (6 1/2 to 7 oz.) can tuna fish, drained and flaked", "1/2 c. finely shredded Swiss cheese", "1 c. chopped celery", "1/4 c. mayonnaise", "2 Tbsp. catsup", "1 tsp. lemon juice", "salt and pepper to taste"]
["Split hamburger buns.", "Combine tuna, cheese, celery, mayonnaise, catsup and lemon juice.", "Season to taste with salt and pepper.", "Divide tuna mixture among 4 buns.", "Wrap each sandwich in waxed paper and twist ends of paper.", "Cook one at a time 1 to 1 1/2 minutes or until rolls are hot."]
["buns", "tuna fish", "Swiss cheese", "celery", "mayonnaise", "catsup", "lemon juice", "salt"]