These are my absolute favorite hamburgers:

Korean Hamburgers

1 lb ground beef
4 tbsps soy sauce
2 tbsps sugar
1 tbsp sesame seed
1 tbsp sesame oil
3 tbsps chopped green onions
2 tbsps minced garlic
salt & pepper

Mix all ingredients thoroughly, shape into 4 patties and grill.
These also work great when made very tiny and served as appetizers.

I can never remember which is better . . . safe? . . . or sorry?