Tri-Tip Marinade

1 cup lemon juice
1 cup olive oil
1/2 cup brown sugar
1/2 cup soy sauce
1/2 cup chopped yellow onion
1 tbls garlic salt
1 tbls black pepper

Marinade a minimum of 6 hours in refrigerator (the longer the better)
Makes enough marinade for two 4-pound tri-tip roasts