How to Cook a Japanese A5 Wagyu Steak
Master the sear-and-slice method for Japanese A5 Wagyu using cast iron, rendering its rich intramuscular fat to create an ultra-tender crust without scorching.
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🧰 Required Tools & Equipment
- ✓ Cast iron skillet
- ✓ Instant-read digital thermometer
- ✓ Kitchen tongs
- ✓ Sharp chef's knife
- ✓ Cutting board
- ✓ Paper towels
📦 Materials & Supplies
- ✓ Japanese A5 Wagyu steak (1/2 to 1 inch thick)
- ✓ Flaky sea salt (Maldon or coarse kosher salt)
- ✓ Freshly cracked black pepper
⚠️ Safety Checkpoints & Warnings
- • A5 Wagyu releases substantial rendered fat quickly; use a splatter screen or position yourself away from hot oil pops.
- • Handle the cast iron skillet handle with a heat-resistant silicone sleeve or dry folded towel at all times.
- • Never pour water into a skillet holding rendered beef tallow to avoid severe grease fires.
📋 Step-by-Step Guide (6 Steps)
Temper and Dry the Meat
Remove the Wagyu from the refrigerator and place it on a clean cutting board for 15 to 20 minutes to take off the chill. Pat every surface of the steak thoroughly dry with paper towels to eliminate surface moisture.
- • Steak surface looks matte and dry without visible liquid beads.
- • Paper towel lifts away dry without sticking.
- • Leaving steak at room temperature for over an hour, causing delicate A5 fat to melt prematurely.
- • Attempting to sear a wet steak, which steams the meat instead of searing it.
Trim Fat Scrap and Portion
Trim a small quarter-inch piece of pure white fat from the edge of the steak to use as pan lubricant. Slice the remaining steak into 1-to-2-inch strips or cook it whole depending on your serving preference.
- • A distinct, small white fat cube is set aside on the board.
- • Steak cuts show clean edges with visible fine webbing of white marbling.
- • Trimming away too much edge fat.
- • Using a dull knife that tears the soft, delicate meat fibers.
Season Lightly with Salt
Sprinkle coarse salt evenly over all sides of the portioned meat from about 8 inches above. Apply salt immediately before cooking rather than letting it sit in advance.
- • Even, sparse speckling of salt crystals across top, bottom, and edges.
- • No moisture drawn out to the surface yet.
- • Over-salting with fine table salt, which overpowers the subtle beef flavor.
- • Adding black pepper before searing, which burns and turns bitter at high heat.
Preheat Skillet and Render Fat
Place the cast iron skillet over medium-high heat until hot. Use tongs to rub the reserved fat scrap across the bottom of the pan until a thin, shimmering sheen of liquid beef tallow coats the surface, then discard or set aside the scrap.
- • Light wisps of smoke rising from a glossy, lightly coated pan bottom.
- • Rendered fat pools in a thin, clear layer with no added vegetable oil.
- • Adding butter or cooking oil, which dilutes the pure Wagyu tallow flavor.
- • Heating the pan on maximum heat until it smokes excessively.
Sear Both Sides
Lay the steak into the skillet gently away from you. Sear for 60 to 90 seconds without moving it, then flip once with tongs and sear the reverse side for another 60 seconds until a deep golden-brown crust develops and the core reaches 125°F to 130°F (medium-rare to medium).
- • Rich, mahogany-golden crust across the seared face.
- • Thermometer inserted into the center reads between 125°F and 130°F.
- • Rendered clear fat actively bubbling around the edges.
- • Crowding the skillet with too many pieces at once, dropping pan temperature.
- • Cooking to standard rare (under 120°F); A5 marbling requires medium-rare to medium heat to fully melt the intramuscular fat.
Rest, Slice, and Garnish
Transfer the steak to a cutting board and let it rest for 3 to 5 minutes to allow juices to redistribute. Cut into thin, bite-sized slices against the grain, finish with a light sprinkle of flaky sea salt, and serve immediately.
- • Even pink interior visible across sliced cross-sections with glossy melted fat.
- • Flaky salt crystals resting on the surface of each slice.
- • Cutting immediately without resting, causing liquid fat to bleed out onto the board.
- • Cutting thick slabs instead of bite-sized strips.
Credit: inspired by an original tutorial by Married to BBQ — watch the original on YouTube.
Don’t have everything?
- No Cast iron skillet? Heavy-bottomed stainless steel skillet
- No Flaky sea salt? Coarse kosher salt