Authentic French tarte au citron recipe. Recipe adapted from my book, Teatime in Paris (2015) with a zingy lemon and lime filling. Fills a pre-baked sweet tart pastry base (recipe link below) or pre-bought 24x2cm/9x1inch shortcrust pastry. As this filling is not custard based or baked, no film forms on the surface and leaves a beautiful glossy finish while setting in the fridge.
Follow the recipe for the pâte sucrée sweet tart base using a 24x2cm/9x1inch tart ring or loose-bottomed tart tin.Blind bake the pastry for 20 minutes as per the recipe. Remove the beans and return to the oven for 10 minutes. Leave to cool, remove from the tart tin or ring and continue to cool completely on a wire rack.
Lemon Tart Filling
Finely zest one of the lemons directly into a saucepan and, if using gelatine sheets, soak them in a bowl of cold water for 10 minutes.
Squeeze the juice of both the lemons and lime then strain to remove any pips. Weigh to reach the exact amount of liquid.
In the saucepan, whisk together the lemon/lime juice with the zest, sugar and eggs. Once mixed together, put on a medium heat while continuing to whisk until the sauce bubbles and thickens. This should take 10 minutes max.
Take off the heat and strain to remove the zest (only if you prefer it smooth - I often keep it in). Whisk in the cubed butter and gelatine (sheets squeezed of excess water or add powder).
Pour directly into the tart shell. Cool and place in the fridge for at least an hour to set.
Notes
To Serve
Remove from the fridge 15 minutes before serving to appreciate the citrus flavours at their best. Pair with Darjeeling or Russian Caravan teas or Champagne.
Storage
Keeps up to 5 days chilled in the fridge in a closed airtight tin, box or in aluminium foil without the pastry becoming soggy.
Baking Notes
Note on gelatine: I don't recommend Agar-Agar as an alternative for this recipe. However, if you are vegetarian and prefer, then use just ½ teaspoon of Agar-Agar powder.Measures: Please note that this recipe is best made using digital kitchen scales in precise metric grams or ounces. Cups are given as an approximate guide only. Nutrition per 62g serving (filling only): 16g carbohydrates, 3g protein, 14g lipids, glycemic index: 11.
Keyword french desserts, French tarts, lemon tart, lemon tart filling recipe, tarte au citron