Tarte aux mirabelles — Lorraine mirabelle plum tart
Tarte aux mirabelles should read first as a mirabelle tart, not as a custard tart with a few plums. Lorraine's small golden plums release abundant juice as they bake, so the construction is intentionally simple: a thin short pastry, a light dusting of ground almonds and enough fruit to cover the surface densely.
The fruit weight is controlled before and after pitting. Nine hundred grams of whole mirabelles yields about 845 g edible fruit after roughly 55 g of pits are removed. That assumption matters because fruit load determines both baking time and moisture. The halves remain identifiable and are arranged tightly rather than chopped or cooked down into jam.
Ground almonds are used only as a moisture-control layer. At 25 g they absorb some juice but do not form frangipane or an almond cream. During baking, the mirabelles soften and release syrup while the crust browns underneath. Cooling for 45 minutes is part of the method: hot fruit syrup is dangerous and too fluid for a clean slice straight from the oven.


