A German confection that showcases red currants in frothy meringue. If you don't have currants available, raspberries or even wild blueberries would be amazing.
Blend the egg and almond extract together and add to the mixture.
Give some more pulses until the mixture starts to come together. It doesn't need to form a ball. If you pinch a good section and it stays together, you're done. If you find it dry, just not coming together, add 1 tbsp of milk. The lack of humidity in the kitchen or even the flour can affect the moisture content of the dough.
Take the pastry and transfer it to the springform pan. You can do this by rolling it around the rolling pin and unrolling it over the pan. Or else just fold it in half and then in half again and transfer it so that the point of the 'wedge' is sitting in the centre of the pan. Unroll and press to the bottom and sides. The pastry will warm up through use, and the butter makes it very soft. But don't despair. You can easily patch it together. Just make sure the sides are all the same height all around. The sides should be roughly 1 1/12- 2 inches (5 cm) high
Preheat the oven to 375F
Scatter the ground or chopped almonds and lemon zest over the currants in the large bowl
Take 2 thirds of the egg whites and add them to the bowl with the red currants, ground almonds and lemon zest. Fold gently till combined.
Spoon the berry meringue filling into the chilled pastry shell. It should come close to the top of the sides of the pastry.
Place the pan onto a baking sheet and bake in the lower third of the oven until firm. This should take approximately 1 hour or a bit more. If towards the end you find the top is browning more than you would like, place some tin foil loosely over it. If you are worried that the foil may adhere to the meringue, adjust one of the other racks so that it is sitting right above the cake without touching it. Place the foil on this to protect the meringue from the heat element.
You can switch out the currants with raspberries, wild blueberries, huckleberries or gooseberries.
This recipe is a riff on the recipe found here