Pyrizhky

• 3 egg yolks
• 3 cutter
• 1 stick
• 1 egg with (white beaten)
• 1/2 dough on a floured work surface (lightly)
• 1/4 thickness
• 325 gr unbleached all-purpose flour
• 120 ml sour cream
• 110 gr butter
• 100 gr coarse sugar crystals