Tarte aux Mirabelles

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The Tarte aux Mirabelles is Lorraine’s most celebrated fruit tart, built upon the region’s prized Mirabelle de Lorraine plums—tiny golden spheres harvested during a brief three-week window in August. The authentic version uses pâte brisée or pâte sucrée as its base, blind-baked at 180°C until just set, then filled with halved and pitted mirabelles arranged cut-side up in concentric circles. The critical technique is the migaine—the Lorraine dialect term for a custard filling of crème fraîche, eggs, sugar, and sometimes a splash of mirabelle eau-de-vie—poured between and over the fruit before the final 25-30 minute bake at 170°C. The mirabelle’s exceptionally high sugar content (around 28°Brix when tree-ripened) means minimal added sugar is needed—typically just 30-40g per tart. Professional technique demands salting the halved plums lightly and resting them cut-side down on paper towels for 20 minutes to draw out excess moisture that would otherwise make the custard weep. The finished tart should present a golden, barely trembling migaine with the plum halves slightly caramelised at their edges. A light dusting of icing sugar and a brief pass under the salamander creates the characteristic freckled surface. This tart is protected by the Mirabelle de Lorraine IGP designation, and authentic versions use only the Mirabelle de Nancy or Mirabelle de Metz varieties.

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