Crudo e Nudo's Tuna Tartare Toast Recipe - Los Angeles Times

Ingredients

• 2 pounds (about 4 medium) white onions, cut into a large dice
• 1/2 tablespoon salt
• 5 bay leaves
• 1 1/2 cups olive oil
• 1/2 pound sashimi-grade tuna (loin and/or belly)
• 1/3 cup onion confit, strained from oil
• 2 tablespoons white soy sauce (shiro shoyu)
• 1 pinch flaky sea salt (preferably Maldon)
• 1 tablespoon yuzu olive oil for garnish
• Toasted black sesame seeds for garnish
• 2 green onions, light and dark green parts, very thinly sliced on the bias for "threads"
• Grated lemon zest for garnish