Directions
Preheat oven to 350 F.
lightly toast coriander seed in pan then grind up and mix with salt and pepper to make a dry rub. Cover tuna loin with dry rub. Heat 1 Tbls of oil in pan over med-high heat. Cook 2 min on each side ( a tuna loin may have 3 sides). Finish in oven on a cookie sheet for 5-15min. The tuna can be raw in the middle, this is ok, 5 min will do. But if you like you fish thoroughly cooked, put it in for 15 min and check in fattest part of loin to make sure it is cooked.