Tuna-wasabi tart

An unusual preparation, in which the tart is cooked in advance and the topping barely warmed. You can vary the garnish by substituting diced or julienned carrot and daikon tossed with a mixture of a tablespoon each of soy sauce and lemon juice for the cheese mixture.

Shiso is a wonderful Japanese herb that tastes a little like basil and mint combined; you may have had it in sushi bars, but it’s only occasionally sold in supermarkets.