Beat the butter, eggs and sugar until frothy and transfer to a large bowl.
Add the flour, lemon zest and a pinch of salt. Distribute the whole thing a little so that a hollow is created. The yeast is crumbled in it.
Now pour the milk over it. This should not be cold, it would be an advantage if it is around 30 ° C. Knead the whole mixture well.
If the dough is still a bit sticky, knead in a little more flour. When you have finished the dough, cover it with a clean drying cloth and let it rise for a good 20 minutes.
It is best to dust a countertop or table with flour. Then roll out the dough about 5 - 6 mm thick. With a glass or a cup, which has a diameter of about 5 to 6 cm, cut out the dough and let it rise for another 20 minutes. The leftover dough can be kneaded together and rolled out again until there is no more dough left.
The dough pieces that have been cut out are deep-fried after rising in a deep fryer or in a saucepan with oil at about 180 ° C. when one side is golden brown, turn it over and deep-fry the other side until you have reached the same color.
After deep-frying, let the donuts drip off on kitchen paper
Put sugar on a plate and roll the crabs in it. You can also use powdered sugar for this.
Now I can only wish you a lot of fun making it and say, enjoy the lard cake