In a food processor, cream the butter and icing sugar together with the lemon zest, then add the egg yolks, and finally the flour: the dough will be soft and sticky at this point. Wrap it in clingfilm ...

Crisp on the outside with chewy interiors, these almond macaroons are perfect for the Passover table. They're a specialty of baker/novelist Louise Miller, who is the pastry chef at The Union Club of ...