In a medium bowl, mix all the wet ingredients together.
In a separate bowl, whisk the salt, pumpkin spice, baking powder, baking soda and flour together.
Mix the flour mixture into the wet ingredients and whisk until smooth.
You can bake the donuts at this point or you can let them ferment.
Let them ferment in the fridge for 6-12 hours.
Preheat oven to 350 degrees F.
Spray a donut pan with a non-stick spray.
Using a spoon, scoop batter into the donut holes until they are ¾ full. You can also use a piping bag, which is much easier.
Bake in preheated oven for 10-11 minutes. Let them cool in the pan for a few minutes, they will release better than if you try right away.
Remove from donut pan and cool completely.