In a bowl mix the sugar and butter really well.

Stir in the eggs, the orange and vanilla extract as well as the whiskey. Stir until foamy.

Add the flour, baking powder and salt. Mix well.

Put the batter for an hour into the freezer or for at least two hours into the fridge.

Preheat oven to 160 °C (325 °F).

Pour the powdered sugar and the extra 50 g sugar on little plates.

Take out the cooled down dough.

With a teaspoon scoop out little balls. Roll them until perfectly round.

First roll them in the granulated sugar, then in the powdered sugar until they are fully covered.

Put the dough balls on a sheet with baking paper, about 4 cm apart from the next.

Bake about 10 to 12 minutes until you can see the crinkles. Take them out of the oven and let them cool down.