01 -
Combine yeast with warm water and let sit for 10 minutes until foamy.
02 -
Mix flour, sugar, and salt in stand mixer. Add yeast mixture, eggs, butter, and optional flavorings. Knead until smooth and elastic.
03 -
Refrigerate dough overnight or let rise at room temperature until doubled in size.
04 -
Divide dough into equal parts and shape into buns. Place on lined tray, cover, and let rise again until doubled.
05 -
Heat oil to 175°C/350°F. Fry donuts in batches for 2 minutes per side until golden brown. Drain on paper towels.
06 -
Heat milk, then slowly whisk into egg yolk mixture with sugar and cornstarch. Cook until thickened. Cool and transfer to piping bag.
07 -
Pipe pastry cream into donuts. Caramelize sugar for topping and dip donuts to create crunchy layer.