This time-honoured favourite— a shortcrust pastry case smothered by a creamy lemon filling and a layer of meringue— is often served for Sunday lunch. It should be baked and served on the same day.
To make the shortcrust pastry, sieve the flour, sugar and a good pinch of salt into a bowl. Add the butter and rub between your fingertips until the mixture resembles fine breadcrumbs. Make a well in the centre. Combine the egg, vanilla and 2 teaspoons water and pour into the well. Slowly stir together with a flat-bladed knife, adding more flour if the mixture is slightl