We were lucky enough to have a friend share some fresh tuna with us. It was amazing! This is the recipe I came up with to celebrate its freshness.
1 lb tuna
1/2 c sesame seeds
1 TBSP chili pepper flakes
Salt and pepper
1 TBSP wasabi
1 piece fresh ginger, finely grated
1/4 c ponzu or soy sauce
1 jalapeño, finely grated
Combine wasabi, ponzu, ginger and jalapeño, set aside.
On a shallow plate combine sesame and chili flakes. Salt and pepper fish, then roll in sesame seeds.
Heat a cast iron skillet on high heat. Cook fish for about 3 minutes per side (depending on thickness).
Serve with sauce.
Serves 4.
cookinwithchris Blog 
Looks great…