Mix all the ingredients in a bowl and whisk well with a mixer until the batter becomes very light and airy. Let it rest in the fridge for 15-20 minutes.

If you have a deep fryer, pour the oil into it and heat it to 170°C.

Alternatively, pour vegetable oil into a thick-bottomed, deep frying pan and heat to 170°C. (You can check the temperature with a laser thermometer, or if you don’t have one, drop a cube of bread into the oil—it should turn golden in 20 seconds.)

Shape a small dough ball with two teaspoons and drop it into the oil. Fry until golden, and the dough balls have increased in size. Remove them from the oil and place them on a paper towel to absorb any excess oil.

Dust with a mixture of icing sugar and cinnamon or drizzle with melted chocolate.

Bonus! A special recipe from Slovenia – add ground tarragon (dried or fresh) to the batter. It will give the flavour an interesting and unexpected twist!