Step 1

Combine all of the marinade ingredients and whisk vigorously.

Step 2

Place tuna steaks in a gallon ziploc bag. Add the marinade, toss to coat the tuna steaks, press out excess air and seal (if using ziploc bag).

Step 3

Transfer to the fridge and chill for 30 minutes.

Step 4

Grill 6-8 minutes on each side until easily flaked with a fork and center of tuna steak is just barely pink. Internal temperature should read 90-95 degrees when done. Alternately, steaks can be seared in a skillet over medium-high heat, or broiled in the oven at 400 degrees.