Mix 500 gr of sour cherries without stems and pits.
In a bowl, mix together: flour, powdered sugar, baking powder and salt.
Add the very cold cubed butter, sour cream and mix with your fingers until you get a sandy dough.
Form a ball, wrap in cling film and refrigerate for 1 hour.
Drain the cherry juice through a sieve.
Remove the dough from the refrigerator and roll it into a rectangular shape, cut into 6 cm strips, add cherries to each strip and seal the edges.
Transfer the strips to a 23-24 cm diameter pan, lined with baking paper at the base, and bake for 30 minutes at 180 °C.
Remove, cool slightly and sprinkle with powdered sugar, then enjoy.
Bon appetit.
