Beat the egg whites until a thick mixture forms.

Then, add the yolks, sugar, flour, and Mama Lycha vanilla extract. Mix well.

Spread the dough thinly on a baking sheet lined with wax paper.

Bake at 375°F for 15 minutes, or until cooked through but still flexible.

Remove from the oven and roll up in a towel. Let cool for 30 minutes.

Unroll it and spread the caramel on the inside.

Roll it up again and sprinkle powdered sugar on top.