These baked sourdough donuts are cake-style donuts with a fluffy vanilla base and a smooth chocolate glaze.

In a large mixing bowl mix together the flour, baking powder, baking soda, and salt and set aside.

In a separate medium bowl, whisk together the milk, discard starter, sugar, egg, butter, vanilla, and milk until well combined.

Add the flour mixture into the wet ingredients. Fold the dry ingredients into the wet until it's combined, but don't overmix.

Grease a donut pan. Scoop the batter into the tin with a small spoon.

Bake the donuts until puffed and just lightly golden brown around the edges. Let them cool in the tray for 5 minutes before removing.

Mix together powdered sugar, cocoa powder, vanilla, and enough milk to make a pourable glaze. 

The Glaze

Dip the domed side into the glaze, then let them dry on a cooling rack.