Place ground beef in a mixing bowl and drizzle with teriyaki, using as much or as little as you like.

Gently mix beef with onion soup mix, about 1 T per patty, adjusting amount according to the size patties being made. The burgers will have plenty of salt from the soup mix and teriyaki sauce, but add pepper if desired.

Grill patties, adding pineapple rings on top after turning over or along side burgers. Butter buns and toast or place on grill the last few minutes of cooking. Grill romaine 1-2 minutes if desired also.

When burgers are done, serve on warm buns with pineapple, romaine, and teriyaki aoili.