To begin, place the butter into the microwave safe bowl/jug. Place into the microwave and heat on 20 second intervals until the butter has completely melted.
Remove the jug from the microwave and add the milk and fresh yeast. Whisk together until combined and leave to one side while you weigh the other ingredients.
Place all the remaining ingredients for the doughnuts into the mixing bowl.
Pour the yeast liquid over and place on the mixer with the dough hook attachment. Mix together for 4-5 minutes unti the dough has become smooth and strechy.
If you don't have a stand mixer, you can knead everything together by hand but it may take closer to 10 minutes to form a smooth, elastic dough.
Once a smooth dough has formed, lightly oil a mixing bowl and place the dough inside. Cover the bowl with cling film or a tea towel and leave in a warm place to rise for 1-2 hours or until the dough has doubled in size.
Once the dough has risen, lightly flour a clean flat working space.
Place the dough onto the floured surface and gently roll out the dough with a rolling pin. You are looking for a similar thickness that is half the height of the round cutter.
Making sure to dip the cutter in flour often, cut out the dough using the cutter.
Carefully place onto a flat lined baking tray.
Gently knead together any leftover dough and continue rolling and cutting out until all the dough has been used. Be careful to roll out the leftovers a little thinner than the first one. This is because when the leftover dough is handled more, it will rise more when cooked.
Place all the doughnuts on the flat, lined baking trays and gently cover with tea towel(s). Leave in a warm place to rise for 1-2 hours.
While the doughnuts are on their final rise, begin preheating the deep fryer or saucepan with oil. You are looking for a temperature of around 160°c (320°f) - 170°c (340°f). If you don't have a thermometer, you can test the oil temperature by placing one doughnut in the hot oil. If it browns heavily within 1 minute, it is too hot. If the oil does not do anything, no bubbles or sound and no colour within 2 minutes, the oil is too cold.
Once the oil is hot enough, gently drop 4-5 doughnuts into the oil.
Allow to cook for 4-5 minutes, carefully flipping often for even cooking until golden brown all over.
Using the spider strainer, carefully lift the doughnuts out of the oil and place onto some kitchen paper for a couplre minutes to drain.
In a small bowl, add the pumpkin spice and sugar and mix together.
Toss the drained doughnuts in the sugar and place to one side.
Repeat the frying, draining and tossing of all doughnuts until you have cooked all.
Store any leftovers in an airtigh container at room temperature. Eat within 1-2 days for the best texture.