We cannot tell the precise moment when friendship is formed. As in filling a vessel drop by drop, there is at last a drop which makes it run over; so in a series of kindnesses there is at last one which makes the heart run over.
James Boswell

Dough ingredients (for 18 cookies):
– 200g all-purpose flour
– 125g butter
– 90g sour cream
– 1 egg yolk
– lemon zest from half a lemon
– 5g vanilla sugar
– pinch of salt
Filling ingredients:
– 100g grated walnuts
– 1 egg white
– 75g cane sugar
Serving ingredients:
– some sugar powder for serving
Method:
1 Dough: combine all dough ingredients, mix until smooth and knead a dough
2 Filling: whisk egg white with sugar for 3-4 minutes, mix in grated walnuts
3 Cookies
3.1 Preheat the oven to 180C
3.2 Roll out the dough to 3mm width
3.3 Cut 10cm diameter rounds with a cookie cutter
3.4 Put 3/4 tsp filling in each round
3.5 Enclose each round with fingers into the half-moon
3.6 Put the half-moons on the baking paper and bake for 20-25 minutes at 180C
3.7 Serve the cookies sprinkles with sugar powder and with a cup of strong black tea ! Enjoy !