Toss the flour with cold grated butter

Add cold water little by little and toss the mixture until it forms a shape

Combine everything and keep in the refrigerator for 30 minutes

Take the dough; roll it; fold twice; keep in the refrigerator for 30 minutes

Repeat the step 4 for 3 times

Make the pastries (if you need fill them with nutella or spices)

Keep them in the preheated oven at 200°C for 15 minutes