Heat the water until lukewarm ( around 110 F) .
Take off heat . Add the sugar and then the yeast
Let rest for 10 minutes or until frothy
Mix the flour and salt well
To this , add the butter and yeast mixture
Mix until a sticky dough forms
Knead for 5 to 7 minutes or until smooth.
Place in a lightly greased bowl , cover and rest in a warm place until doubled or about an hour. This is first proofing
After dough has doubled , punch out the air
On a floured surface , roll the dough into a rectangle about an inch thick
Using a round cutter , cut out circles of dough . Place them on a plate or sheet of parchment.
Re roll scraps and cut out circles of the remaining dough
Let the dough circles rest for half hour or until double in size.
Heat oil ( about 3 inches deep) in a deep pan or wok.
Gently place dough circles into the hot oil without overcrowding. Fry until golden brown , flip over and fry until the other side is golden brown. Remove from oil and place on tissue to drain.
Once all the doughnuts are fried and cooled , its time to assemble !