steak marinade gluten free

Steak Marinade for 2 steaks:

1/4 cup wine vinegar (or apple cidar vinegar)
1 grated onion (or finely chopped)
1/4 cup oil
1/2 T Worcestershire sauce
1/8 tsp dry mustard (optional)
1 clove garlic, crushed
1 T lemon juice
pepper to taste

Marinade 6 hours- give or take