Tender Grilled Tri-Tip

Tri-tip is the Santa Maria triangle of beef, a small, well-marbled cut off the bottom sirloin that rewards hot fire and a short marinade. California grill cooks have been doing it this way for decades: simple bag, simple ingredients, big payoff. Here the marinade is four things total. Onion soup mix, soy sauce (or tamari for a gluten-free version), a splash of water, and the roast itself. An hour and a half in the bag is enough. The salt works its way in, the soy tints the surface so it darkens properly over the coals.

The technique is the real trick. Grill fat side down first for a solid eight minutes, flip and baste, another eight. Then slice the roast into thick planks while still rare and lay them back on the grates for thirty seconds a side. You get a crusty edge on every slice and a pink middle from edge to edge, which is exactly what you want.

Kitchen Tips

• Rest the roast 5 to 10 minutes before slicing. The planks go back on the grill, but the initial rest lets the juices settle so the inside stays rosy.
• Slice across the grain. Tri-tip has grain that changes direction midway through the roast, so rotate the cut and re-read the lines as you go.
• Build a two-zone fire if using charcoal. Sear over direct heat, finish over indirect if the outside darkens too fast.
• Baste with reserved marinade only during cooking, never at the table. Raw-meat liquid needs heat to be safe.

Variations

• Garlic-rosemary rub: Skip the soup mix and rub with kosher salt, cracked pepper, minced garlic, and rosemary for a classic Santa Maria profile.
• Espresso crust: Mix a tablespoon of instant espresso into a dry rub for a deeper bark.
• Tacos: Slice leftovers thin and tuck into warm corn tortillas with salsa verde.