Ahi tuna salad

Ingredients

• 1 and 1/4 pounds ahi tuna
• 1/4 cup onion, minced
• 1/4 cup green onion, minced
• 1 teaspoon fresh ginger, minced
• 2 tablespoons lightly crumbled seaweed
• 1 tablespoon roasted macadamia nuts, ground
• 2 teaspoons sesame oil
• 1 and 1/2 teaspoons crushed red pepper flakes
• 8 leaves iceberg lettuce
• 2 tablespoons cilantro, for garnish