Seared Tuna With Sage without shallots

1 1/2 lbs center-cut fresh ahi tuna or inch thick sushi quality tuna steak 1 teaspoon kosher salt 2 teaspoons black peppercorns 1 teaspoon white peppercorns 2[...]

1 1/2 lb Center-cut Ahi tuna 1 tsp Kosher salt 2 tsp Black pepper corns 1 tsp White pepper corns 2 tsp Fennel seed 1 1/2 tsp Dry lavender flowers 3 Tbsp.[...]