Cure the Salmon: Mix your salt and sugar. Place your tuna on a wire rack set over a baking sheet and sprinkle the mixture over both sides. Refrigerate for 15-30 minutes to cure. When done, rinse and dry well.
Prepare the Components:• White Soy Ginger Ponzu: In a bowl, whisk together the white soy sauce, mirin, rice vinegar, ginger, garlic, agave and bonito. Set it aside.• Crispy Carrots: Peel the carrots, the slice very thin on a mandolin and then cut into matchsticks. Heat oil in a small pan and fry until golden. Remove with a spider ladle and let rest on a paper towel.• Sesame Crust: Stir together the soy sauce and honey, then brush it onto the tuna. On a plate, combine the sesame seeds and coat the tuna evenly on both sides.
Assemble: Slice the tuna into ½-inch pieces. Strain the white soy ginger ponzu onto your serving plate and arrange the tuna on top. Add a dollop of Japanese mayo and a jalapeño slice on top of each piece. Top with the crispy carrots, chives and a drizzle of chili oil. And that is it!