How do I know when my ahi tuna is done?
For rare tuna, sear 90 seconds per side over high heat. The center should be cool to the touch. Use a meat thermometer: 110–115°F for rare, 125°F for medium-rare. Overcooking makes tuna dry and tough.
Can I use frozen ahi tuna?
Yes, but thaw completely in the refrigerator beforehand and pat very dry before cooking. Pat dry twice if needed to ensure a good sear.
What can I substitute for yuzu juice?
Lime juice or fresh lemon juice work well in a pinch. You'll lose the slight bitterness of yuzu, but the sauce will still be bright and acidic.
Can I make the sauce ahead?
Yes, mix the soy sauce, yuzu juice, mirin, rice vinegar, and honey up to 1 day ahead. Store in an airtight container in the refrigerator and bring to room temperature before serving.
Is this recipe safe to eat rare?
Sushi-grade ahi tuna is safe to eat raw and rare. Always source from a reputable fishmonger and confirm it is sushi-grade before purchasing.