1Knead all ingredients until a soft and elastic dough is obtained (by hand approximately 15 min / with a mixer approximately 10 min).
2Divide into 12 portions (approximately 75 g each), dip in the butter and oil mixture, let rest for a few minutes, and flatten slightly.
3Stack 3 portions on top of each other (spreading with the mixture between each layer) to make 4 stacks. Cover with plastic and let rest for 20 min.
4Roll each stack into a round shape, spread with the mixture, make a cut halfway through, and fold into a triangle. Cover with plastic and allow to rise for 20 min.
5Roll out into a triangle shape, cut into 3 long strips and roll slightly into croissant shapes. Place on the tray, cover with plastic, and allow to rise for another 20 min.
6Brush with a mixture of yolk and a little milk and bake for 15 min at 190°C.
7Remove from the oven and immediately cover with a clean cloth to keep them tender.