First,mix the milk with white vinegar or lemon juice and set aside for the milk to curdle (about 5 mins).
Preheat your oven to 180℃ and line your baking pan with parchment paper.
In a large bowl, mix together the flour, sugar, baking powder, baking soda, salt and cinnamon.
Add the curdled milk, oil and eggs and mix everything until a smooth dough forms. Dough should not be sticky so add more flour if needed.
Transfer dough to a lightly floured surface and use your palms to press the dough into desired thickness. Using a cookie cutter, cut the donuts then cut in the center with a smaller cutter. Gather the remaining dough and repeat the process until no dough remains.
Transfer the donuts to your baking tray and bake in preheated oven for 12-15 mins or until golden brown. Remove and let cool completely before glazing.
Mix all glaze ingredients together until smooth. Dip the cooled donuts and decorate with sprinkles or shaved chocolate.
Mix all glaze ingredients together until smooth. Start with 2 tbsp milk and add more if needed. Dip the cooled donuts and decorate with sprinkles or shaved chocolate.