Step 1: Marinating
For this to work, you need soak time. I started the burgers before I made breakfast.
1) Take your burgers (frozen or not) and submerge them in a pan of vinegar (and other spices/sauces. its mostly vinegar though)
2) Cover and fridge it
3) Wait for lunch
Step 2: Get grillin!
Fire it up! were gonna get cookin!
Step 3: Grillin step one
Put burgers on grill
Slice onions 1/4" thick, put on grill by the burgers.
Step 4: Grillin step two
Step 5: Grillin step three
Put the grilled onions on the burger *first* (it makes a difference, I don't know why)
Then put the tomatoes on top of the onion.
Make sure you use toasted bread/buns on this, that bread will fall apart too.
Don't add condiments!!! (why? cause you just cooked your own. Vinegar, tomato, onion. look at your ketchup bottle, same stuff and some fake stuff)