Tuna and Avocado Tartare

Instructions

1. Being careful not to mush the avocado, mix it with the salt, mayonnaise (if using) and half the lemon juice in a bowl, then divide into even portions. Carefully shape each portion into a round base on individual small plates.
2. Mix together the tuna, spring onion, soy sauce, sugar, sesame oil and remaining lemon juice in a large bowl. Divide into even portions and layer over the top of each avocado base to form a small tower.
3. Optional: top each tower with a flourish of micro leaves, herbs or cress, then sprinkle with sesame seeds.
4. Serve immediately.