Tuna tartare

Ingredients:

• 1.6 kg very fresh tuna steak
• 1 and 1/4 cups olive oil
• Grated zest of 5 limes
• 1 cup freshly squeezed lime juice
• 2.5 tsp wasabi powder
• 2.5 tbsp soy sauce
• 2 tbsp. hot pepper sauce
• 2.5 tbsp coarse salt
• 1.5 tbsp freshly ground black pepper
• 1 and 1/4 cups chopped green onions (12 greens)
• 3 and 1/4 tablespoons finely chopped fresh jalapeno peppers, seeds removed
• 5 ripe Hass avocados
• 1.5 tbsp toasted sesame seeds, optional

Preparation:

1. Cut the tuna into 0.5 cm cubes and place in a very large bowl. In a separate bowl, combine the olive oil, lime zest, lime juice, wasabi, soy sauce, hot sauce, salt, and black pepper. Pour the mixture over the tuna, add the green onions and jalapeño, and mix well.
2. Halve the avocado, remove the pits, and peel. Cut the avocado into 0.5 cm cubes. Thoroughly mix the avocado and tuna. Add toasted sesame seeds, if using, and season with salt to taste. Refrigerate the mixture for at least 1 hour to allow the flavors to meld. Serve on crackers.