Tuna Tataki - cooking recipe

Ingredients

1 fresh loin tuna steak (without bloodlines)
black pepper
Sauce
1 cup peanut oil
1 ounce sesame oil
2 ounces soy sauce
1/2 ounce garlic, grated
1/2 ounce ginger, grated
five-spice seasoning

Preparation

Roll tuna in cracked black pepper then sear it in very hot cast iron pan without oil, cool down for better slicing.
Slice tuna very thin, serve with sauce down and garnish with pickled ginger.