Filled with gooseberries and rhubarb – or any berries you like – this gloriously rich dessert comes from Russia. Serve with a dollop of sour cream.
Serves 6-8
INGRÉDIENTSFor the pastry- 225g unsalted butter, chilled and cubed
- 225g plain flour
- A pinch of salt
- 2 egg yolks
- 1 tbsp iced water
- The grated zest of 1 lemon
For the filling- 600g rhubarb, the green stalks are ideal
- 600g green currants
- 150g caster sugar Zest
- and juice of 1 lemon
For the filling- 440g walnuts
- 400ml crème fraîche, plus extra for serving
- 3 egg yolks
- 1 lemon
- 1 tbsp milk
- Sugar, for dusting
PRÉPARATION- Preheat your oven to 190°C/gas mark 1.
- Have a 26cm fluted tart pan with a removable bottom nearby.
- For the pastry, place the cold, chopped butter in a bowl, add the flour and salt, and work it into fine crumbs.
- Add the egg yolks, iced water, and grated lemon zest.
- Knead until the dough forms a ball. Once smooth, cut off a third and form a rough disc.
- Cover with plastic wrap and refrigerate for at least an hour. Repeat with the larger piece of dough.
- If you're using fruit instead of jam, cook it first.
- Trim the rhubarb and cut it into 2.5cm pieces. Hull the currants.
- Arrange the rhubarb pieces in a single layer in a shallow dish.
- Sprinkle with half the sugar and two or three lemon zests.
- Place the hulled and stemmed currants in a similar dish in a single layer, sprinkling them with the remaining sugar and two or three more lemon zests.
- Squeeze the lemon and divide the juice between the two dishes.
- Cover the dishes with aluminum foil and bake for about 20 minutes, until tender. Let cool.
- Remove the larger piece of chilled pastry from the refrigerator and roll it out until it is large enough to cover the tart base.
- Keep it refrigerated, as the pastry is very rich in butter and may soften if it gets too warm.
- Chop the walnuts very finely; a little extra crunch is welcome.
- Now begin assembly. Spread the cooled tart shell with jam or roasted fruit, which you can scatter randomly.
- Sprinkle with chopped walnuts. Beat the crème fraîche with 2 egg yolks and spread evenly over the walnuts.
- Unroll the remaining pastry lid and place it over the filled tart.
- Beat the remaining egg yolk with 1 tablespoon of milk and brush generously over the crust. Sprinkle lightly with sugar.
- Bake the tart for 40 to 45 minutes, or until golden brown. If in doubt, an extra 10 minutes should allay your concerns.
- Allow the tart to cool completely before removing from the pan. Since the dough is rich in butter, don't worry about cracks: it's natural.
- Serve with a dollop of sour cream