1 tbsp freshly-squeezed lemon juice (optional but recommended)
3 tbsp hot water, or as needed to make a thick, syrupy glaze
Instructions
combine 1 tablespoon of the yeast with ¾ cup of the warm milk in a medium-sized bowl and stir to dissolve the yeast
add ¾ cup of the flour and stir until it forms a smooth paste
cover the bowl with plastic wrap and let the starter rest in a warm place for about 15 minutes (photo 1)
when the starter is risen and bubbly, combine the remaining 1 teaspoon yeast with the remaining ¼ cup milk in a stand mixer with the paddle attachment
add the starter, vanilla and egg yolks and mix on low speed until the ingredients are incorporated and the dough is smooth, about 30 seconds (photo 2)
turn off the mixer and add 1 cup of flour, along with the sugar and salt, and mix on medium until the dough starts to come together, about 30 seconds
add the butter and mix on medium until it's incorporated, about 30 seconds
remove the paddle attachment and insert the dough hook
add remaining flour, ¼ cup at a time and knead the dough on medium until it pulls away from the side of the bowl and is smooth, about 1 minute (you may not require all the remaining flour)
cover the bowl with plastic wrap and let the dough rest in a warm place for about 30 minutes
when the dough has almost doubled in size, press gently on it to remove any large bubbles bubbles
cover bowl with plastic wrap and chill for one hour, or up to overnight (photo 3)
line a baking sheet with a lightly-floured tea towel or waxed paper
when you are ready to make your donuts, roll out the dough on a lightly-floured surface to a thickness of ½ inch
using a one inch cookie cutter (or a shot glass!), cut out the donut holes (photo 4)
arrange the donut holes one inch apart on the prepared baking sheet (photo 5)
cover the donuts loosely with plastic wrap and let them rest in a warm place until almost doubled in size, 30 to 40 minutes (the dough should spring back slowly when you poke it with your finger) (photo 6)
while the donut holes are resting, make the glaze by whisking together melted butter, icing sugar, vanilla, cinnamon, lemon juice and hot water, set aside (before icing the cooked donut holes, heat the glaze for a few seconds in the microwave if it stiffens up too much) (photo 7)
line a baking sheet with paper towel, waxed paper or newspaper and put a wire cooling rack on top
in a large, heavy-bottomed pot or deep fryer***, heat at least 2 inches of oil 350F
place donut holes in the hot oil without overcrowding them
stir the donut holes gently so they cook evenly (photo 8)
using a slotted metal spoon, transfer the cooked donut holes to the wire rack and continue cooking remaining donut holes
when donut holes have cooled slightly, drizzle with glaze or toss in a large bowl with glaze (photo 9)
place your donut holes on a pretty plate and take a photo really quickly before the hordes descend and gobble them all up (photo 10)
Notes
* if you don't use instant yeast, that's fine, it will just take a bit longer for your starter and the donut holes to rise
** just grind granulated sugar in a spice grinder for a few seconds to get superfine sugar
*** I use my Dutch oven
Recipe by You Have Been Served at https://www.youhavebeenserved.ca/2015/07/21/donut-holes/