Mrs. Wraith prefers her steaks unadulterated, but even she thinks this turned out well.
1 cup roasted red pepper-infused olive oil (You can make this yourself, or, optionally, add one chopped red pepper.)
1/2 cup soy sauce
1/3 cup red wine vinegar
3 tablespoons Worcestershire sauce
2 tablespoons Dijon-style prepared mustard (Pardon me, would you have any Grey Poupon...?)
1 tablespoon freshly ground black pepper (Alternately, substitute "Lavender Pepper," available from terraverdefarms.com. [Terra Verde Farms is NOT compensating me in any way--I just like a lot of their stuff.])
1 medium onion, sliced
3-4 large cloves garlic, minced
Mix. Marinate meat. Cook. Eat.