Tuna Tartare

Sushi Rice

• 14 oz sushi rice
• 32 oz water, plus extra, cold, to rinse
• 4 oz rice wine vinegar
• 1 tbsp vegetable oil
• 1 oz sugar, to taste
• 1 pinch salt (optional)

Tuna Tartare

• 1 lime
• 10 oz sushi grade tuna, cubed (1 in.)
• 1 tsp mirin
• 2 tsp ponzu sauce
• 1 ½ tsp soy sauce, plus extra to serve
• ½ tsp toasted sesame oil
• 1 tsp wasabi, plus extra to serve
• 1 tsp fresh ginger, grated
• 1 tsp salt
• ¼ tsp ground white pepper
• 1 ripe avocado, thinly sliced
• black sesame seeds, to garnish