Little fried dough balls, golden and sugar-dusted, are Italy's cheerful Carnival treats. These small mediterranean sweets bring families together during the festive season.
Combine the flour, baking powder, salt, and lemon zest in a mixing bowl and whisk until evenly distributed.
In a separate bowl, blend ricotta cheese, eggs, milk, vanilla extract, and granulated sugar until smooth and creamy.
Gradually add the wet mixture into the dry ingredients, stirring constantly with a spatula until you achieve a soft, slightly sticky dough. Do not overmix.
Heat the vegetable oil in a deep skillet or saucepan to 340°F, maintaining steady medium heat for even cooking.
Using a small cookie scoop or two teaspoons, carefully drop dough balls into the hot oil in batches, being careful not to overcrowd the pan.
Fry each dough ball for 2–3 minutes, gently turning occasionally for even golden color, until puffed and cooked through. Remove with a slotted spoon and drain on paper towels.
While still warm, toss the fried castagnole in powdered sugar to coat evenly. Serve fresh or at room temperature.