Place the flour and sugar in a bowl

Add the yeast to the milk and stir until dissolved

Add the milk to the flour

Add to the flour and butter at room temperature, salt, vanilla, eggs and lemon zest. Knead with the mixer 3 to 4 minutes on low speed and another 6 to 7 minutes on high speed

With gentle movements. shape the dough into a ball and place it in an oiled bowl,

Cover with cling film and leave until it doubles in size

Sprinkle with flour and place on the workbench

Spread with the rolling pin until it reaches about 1.5 cm thick

Cut the donuts and let them rise for about 15 minutes before frying

Sprinkle with sugar and cinnamon