Dry Aged USDA Prime Porterhouse — Two-Zone Grill Method

Dry Aged USDA Prime Porterhouse — Two-Zone Grill Method

Dry Aged USDA Prime Porterhouse — Two-Zone Grill Method

A porterhouse gives you the best of both worlds: a rich strip steak on one side of the bone and a tender filet on the other. When it’s dry aged USDA Prime, you get deep flavor and a steakhouse experience at home. This two-zone grill method gives you a great crust without overcooking the more delicate filet side.

🥩 Cut: Dry Aged USDA Prime Porterhouse

This guide is designed for thick porterhouse steaks (about 1½–2 inches). If your steak is thinner, reduce the indirect cooking time slightly and lean on your thermometer.

🕒 Time & Difficulty

  • Active time: 15–20 minutes
  • Total time: 45–60 minutes (including temper & rest)
  • Difficulty: Moderate home cook

🧂 Ingredients

  • 1 dry aged USDA Prime porterhouse steak
  • Kosher salt
  • Freshly ground black pepper
  • Neutral oil, for light coating
  • Optional: garlic powder or simple steak seasoning (use lightly)

🍽️ Equipment

  • Gas or charcoal grill set up for two-zone heat
  • Long tongs
  • Instant-read thermometer

🔥 Step-by-Step: Grilled Porterhouse

1. Temper & season

  • Take the steak out of the fridge 30–45 minutes before grilling.
  • Pat very dry with paper towels.
  • Season generously with kosher salt and black pepper on all sides, including edges.

2. Set up your grill

  • Gas grill: one side on medium-high, the other on low or off.
  • Charcoal: pile coals on one side for direct heat and leave the other side cooler.
  • Clean and oil grates lightly.

3. Sear over direct heat

  • Place the steak over the hot side of the grill.
  • Sear 2–3 minutes per side until you get deep grill marks and browning.
  • If flare-ups get too aggressive, move temporarily to the cool side until they calm down.

4. Finish over indirect heat

  • Move the steak to the cooler side with the strip side closer to the heat and the filet slightly farther away.
  • Close the lid and cook gently, flipping every 4–5 minutes.
  • Start checking internal temp after about 10 minutes on indirect heat.

5. Target temperatures

The filet side will usually run a bit hotter than the strip side. Check both and use these temps as a guide (remember it will rise 3–5°F while resting):

  • Rare: 120–125°F (49–52°C)
  • Medium-rare: 130–135°F (54–57°C)
  • Medium: 135–140°F (57–60°C)

6. Rest & carve

  • Transfer to a cutting board and rest 10–15 minutes, loosely tented with foil.
  • Slice the strip and filet portions off the bone, then slice each section into thick strips.
  • Arrange back around the bone on a platter and finish with a pinch of flaky salt, if desired.

Serving Ideas

  • Serve family-style with roasted potatoes and a bright green salad.
  • A drizzle of garlic-herb butter or chimichurri works well with both sides of the steak.
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