Marinated Sirloin Steak (Overnight)

This is a workhorse marinade recipe for grilled sirloin steak, built around the soy sauce-Worcestershire-Dijon trinity that’s been showing up in American backyard grilling for half a century. The overnight soak is what separates this from a quick weeknight marinade. Twelve hours pulls the flavors deep into the meat instead of just coating the surface.

A full ¾ cup of soy sauce sounds like a lot until you realize it’s getting diluted by 1½ cups of water and the natural juices the meat releases. The water is intentional, not a shortcut. It allows the marinade to fully surround the meat without the soy turning the surface salt-cured and gray.

White wine vinegar and lemon juice provide just enough acid to tenderize the muscle fibers without breaking them down to mush. Dijon mustard contributes both acid and emulsification, helping the oil and water-based ingredients hold together so the marinade coats evenly.

Pro Tips

• Use a heavy-duty resealable bag rather than a dish. The bag forces the marinade into full contact with every surface of the steak.
• Take the steak out of the fridge 30 minutes before grilling. Cold meat hits the grill and clamps up.
• Discard the marinade after removing the meat. Don’t be tempted to baste with it. Use a separate batch if you want a basting sauce.
• Use a thermometer for doneness: 130°F (54°C) for medium-rare, 140°F (60°C) for medium, 155°F (68°C) for well-done. Take it off 5 degrees before target since it carries over while resting.

Variations

• Add 2 tablespoons of brown sugar or honey to the marinade for a slightly sweet glaze.
• Substitute fresh thyme and parsley for the dried for brighter herbal notes.
• Use this marinade on flank steak, hanger steak, or even thick-cut pork chops with equally good results.