preheat oven to 350˚
lightly grease two doughnut pans and set aside
zest the lemon, set aside
juice the lemon and strain out seeds-you will need a 1/4 cup for this recipe
whisk the sour cream, egg, butter, 1 tsp of lemon juice, a pinch of lemon zest and the sugar together until smooth
mix 2 cups of flour, with 1 tsp of baking soda and 1/2 teaspoon of salt
add the wet ingredients to the dry ingredients and quickly stir together
fill the doughnut pans evenly
bake at 350˚ for 10-12 minutes or until they spring back to the touch
meanwhile mix the confectioners sugar with the lemon juice, add a small amount of the juice to start with just in case it gets to runny
add a little lemon juice at a time until the icing is mixed but not too runny
when the doughnuts are done cool for 3 minutes in the pan
then gently lift them out to a cooling rack
while the doughnuts are still slightly warm dip the tops in the icing
sprinkle with reserved lemon zest
best enjoyed warm