Preheat oven to 425 degrees F and line baking sheet with parchment paper.

In bowl, whisk together flour, sugar, baking powder, and salt.

Add in the yogurt and 1/4 C of milk. Stir until dough forms.

Transfer dough to floured surface.

Add a little bit more milk to bowl until floury bits on outside of bowl form dough; add to other dough.

Knead a few times until smooth.

Using a floured rolling pin, roll dough out to 1 inch thick.

Cut into 3″ rounds (with cutter or drinking glass).

Can brush top of biscuits with whisked egg to create a smooth finish.

Place 1 inch apart on lined baking sheet; bake for 15 minutes or until golden brown.