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Tuna Steak

Sushi-grade ahi, 1″ thick

Quick Answer

Tuna Steak: sear on high heat for 1–2 min/side. Internal temp: Rare center (115°F) recommended.

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Safe Internal Temp
Rare center (115°F) recommended
Print the full temperature chart →

Cooking Methods

High1–2 min/side
Burner Guide: Use cast iron, as hot as you can get it with a full 4–5 minutes of preheating, until a thin coat of high smoke-point oil (avocado or grapeseed, not olive) is shimmering and just starting to smoke. You're searing at roughly 450°F to build a crust in 60–90 seconds per side while the center stays raw. A sesame crust is the classic move: press the seeds on right before the pan, they toast during the sear. Pull it early: carryover on a hot sear can climb another 15–25°F, so come off the heat at 105–110°F to land at rare. The whole cook is under 3 minutes.
✎ Rare center is the goal. Sesame crust is classic.

Doneness Chart

DonenessTargetPull TempWhat to Expect
Rare (recommended)115°F110°FDeep ruby red and cool in the middle, like sashimi wearing a seared crust. This is the move.
Medium-Rare125°F120°FWarm red center, firmer at the edges but still silky. This is the last stop before tuna starts drying out. Go here if rare makes you nervous, but no further.
Medium140°F135°FPink throughout and noticeably drier. The texture slides from silky to mealy fast. Past this you've made expensive canned tuna.
Pull temp = when to remove from heat. Carryover cooking raises the temp 5–10°F as it rests.

Look for deep red, glossy steaks about 1″ thick and skip anything with brown edges or a fishy smell (fresh tuna smells like the ocean, not the fish counter). "Sushi-grade" isn't a regulated term, so the source matters more than the label; buy from a fishmonger who'll tell you straight that it's safe to eat rare. Almost all tuna sold in the US was flash-frozen at sea, and that's a feature, not a flaw. Freezing kills parasites, and frozen ahi from a good grocer beats "fresh" tuna of unknown age. Cook it the day you buy it and pat it bone-dry before it hits the pan.

Tuna steak is the fastest protein on this site - a proper seared ahi takes under 4 minutes, and the only real skill is having the nerve to stop cooking. Treat it like a beef steak, not a fish: screaming hot surface, hard crust, rare 115°F center. If you've been cooking tuna like cod, I bet you it's been dry. Below you'll find times and temps for searing, grilling, and broiling.

Food Safety

The FDA says 145°F for fish, but nobody who cooks tuna well follows that. Tuna steaks are meant to be eaten rare, around 115°F. Almost all tuna sold in the US has been flash-frozen, which kills parasites the same way cooking does, so the real safety question is your source, not your temperature. "Sushi-grade" is marketing, not regulation; buy from a reputable fishmonger and ask if it's safe to eat rare. To check temp on a 1″ steak, slide an instant-read thermometer in from the side, not the top. If you only like fully cooked fish, pick cod or halibut instead - tuna past 140°F is dry, mealy, and a waste of $20 a pound.

Frequently Asked Questions

What are the best tips for cooking tuna steak?
Best served rare to medium-rare. Overcooked tuna is dry and mealy. Very hot, very fast.
What internal temperature should tuna steak reach?
The FDA says 145°F for fish, but nobody who cooks tuna well follows that. Tuna steaks are meant to be eaten rare, around 115°F. Almost all tuna sold in the US has been flash-frozen, which kills parasites the same way cooking does, so the real safety question is your source, not your temperature. "Sushi-grade" is marketing, not regulation; buy from a reputable fishmonger and ask if it's safe to eat rare. To check temp on a 1″ steak, slide an instant-read thermometer in from the side, not the top. If you only like fully cooked fish, pick cod or halibut instead - tuna past 140°F is dry, mealy, and a waste of $20 a pound.
What are the doneness temperatures for tuna steak?
Rare (recommended): 115°F (pull at 110°F). Medium-Rare: 125°F (pull at 120°F). Medium: 140°F (pull at 135°F). Pull temp is when to remove from heat. Carryover cooking raises the temp 5–10°F during rest.
How do you sear tuna steak?
Sear at 1–2 min/side. Rare center is the goal. Sesame crust is classic.
How do you grill tuna steak?
Grill at 1.5–2 min/side. Oil well. Quick sear only.
How do you broil tuna steak?
Broil at 2–3 min/side. Watch like a hawk: goes fast.