Aloha burgers

8                    our           pineapple slices
     3/4  cup           teriyaki sauce
   1      pound         ground beef
   1      large         sweet onion -- sliced
   1      Tablespoon    butter or margarine
   4                    lettuce leaves
   4                    onion or sesame seed buns, -- split
                        and toasted
   4      slices        Swiss cheese
   4                    bacon strips -- cooked

Drain pineapple juice into a small bowl; add teriyaki sauce.
Place 3 Tablespoon in a resealable plastic bag. Add         
pineapple and rotate to coat; set aside. Shape beef into    
four patties; place in a 8" square baking dish. Pour the    
remaining teriyaki sauce mixture over patties; marinate for 
5-10 minutes, turning once. In a skillet, saut onion in     
butter until tender, about 5 minutes. Grill or broil burgers
until no long pink. Place pineapple on grill or under       
broiler to heat through. Layer lettuce and onion on bottom  
of buns. Top with burgers, cheese, pineapple and bacon.     
Replace tops; serve immediately.