Kerrie Kelly's Ahi Tuna TarTare - Cobram Estate

Ingredients

• 3 3⁄4 lbs very fresh tuna steaks
• 1 1⁄4 cups Cobram Estate Olive Oil
• 5 limes, zest
• 1 cup freshly squeezed lime juice (from those you zested)
• 2 1⁄2 teaspoons wasabi powder
• 2 1⁄2 tablespoons soy sauce
• 2 tablespoons hot red pepper sauce
• 2 1⁄2 tablespoons kosher salt
• 1 1⁄2 tablespoons fresh ground black pepper
• 1 1⁄4 cups minced scallions
• ¾ teaspoon peeled and minced ginger
• 3 1⁄4 tablespoons minced fresh jalapeno peppers, seeds removed
• 5 ripe Hass Avocados
• 1 1⁄2 tablespoons toasted sesame seeds