Beat butter, add sugar, then beat until smooth.

Add to the resulting mass flour...

...and lemon zest

Preheat the oven to 200*. Very quickly (so the butter could not melt in his hands) roll the dough in small flagella (had a length of about 5 cm). Spread on a greased baking sheet and bake until Golden brown (they will spread very much, so we need to put them far enough from each other). And then get, to remove from the baking tray on the baking paper and cool.