Lightly grease a baking tray with solid fat and place parchment paper on it.
Get 3 medium eggs and separate the yolks and egg whites. Put the egg whites into a clean bowl. Add a pinch of salt and a bit of granulated sugar. Start beating the egg whites with a mixer on low speed. Gradually increase speed and add all the ½ cup granulated sugar until you use all of it.
Reduce the speed to minimum and gradually add the egg yolks to the whipped whites, one at a time.
Fold in ¾ cup all-purpose flour mixed with 1 Tablespoon corn starch. Use your hands and a kitchen silicone spatula. Mix thoroughly; there shouldn’t be any lumps in the batter. The finished mixture is light and airy.
Preheat the oven to 380 °F – Piškoty need a higher temperature to be crispy enough.
Put the foamy batter into a piping bag with a round tip and pipe small mounds about 1.⅕ inches (3-4 cm) in diameter.
Dust the mounds with ⅓ cup powdered sugar using a sifter.
Insert the tray into the oven and bake the Piškoty for 10-15 minutes until they turn light golden.
Notes
Store finished piškoty in a box covered with a table napkin. The box doesn’t need to be sealed with a lid. Piškoty could moisten and lose their crispiness.
The basic recipe makes about 60 small Piškoty biscuits.