[header] How to make grilled pineapple burgers [title] Saute the onions under tender or translucent in color. [step] This can be accomplished before or after grilling the burgers. [title] Make the marinade. 
[step] Combine the teriyaki sauce and reserved pineapple juice in a small bowl. Add about 2-3 tablespoons of the mixture into a plastic freezer bag and set the remaining aside.