Tarte au Citron de Menton

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The Tarte au Citron de Menton celebrates the unique lemon of Menton—a town on the Italian border that produces France’s only significant citrus crop, prized by pastry chefs for its exceptionally thick, aromatic peel and juice that is sweeter, less acidic, and more complexly floral than standard lemons. The Menton lemon (IGP since 2015) has become a darling of French haute pâtisserie, and the tart built around it showcases its qualities with minimal interference. The base is a pâte sucrée blind-baked to a biscuit-like crunch. The filling is a lemon curd (crème au citron) made from Menton lemon juice and zest: 150ml juice, the finely grated zest of 4 lemons (the thick Menton peel yields extraordinary quantities of zest), 200g sugar, 4 eggs, and 150g cold butter cut into cubes. The eggs and sugar are whisked, juice and zest added, and the mixture cooked over a bain-marie to 82°C, stirring constantly until it thickens to coat a spoon. The cold butter is then emulsified in off the heat, cube by cube, creating a silky, glossy curd with the consistency of thick custard. The curd is poured into the cooled tart shell, levelled, and chilled until set (3 hours minimum). The traditional finish is a thin, torched meringue—Swiss meringue piped in peaks and caramelised with a blowtorch—though some prefer the curd naked with just a scattering of Menton lemon zest. The defining quality of a Menton lemon tart versus any other lemon tart is the zest: where a standard lemon’s zest contributes citric sharpness, Menton zest contributes a floral, bergamot-like complexity that elevates the tart from excellent to transcendent.

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