Place each doughnut on a piece of parchment paper, then place on a cookie sheet. Put the tray in the oven (turn it on for 1 minute, SET A TIMER, then turn the oven off again, just to make it barely warm). The oven warming step should not be necessary in the summer unless your a/c is very cool.
Next, boil some water and pour it into a measuring jug or bowl. Place the jug of water in the oven with the tray of doughnuts (this will create steam will keep a skin from forming).
With the remaining dough, divide into quarters, then divide each piece in half to make 8 equal amounts. If you are perfectionistic, you can weigh each piece–not that I’d ever do any such thing!
Roll each piece of dough into a smooth ball on a lightly floured surface, and place on parchment or waxed paper pieces and place on a cookie sheet; place in the oven with the other doughnuts and holes to rise until doubled in size. (Please don’t focus on the time, just go by how they look, but usually anywhere from 1/2 hr to 1 hour is normal for this second rise.) I don’t like to waste plastic wrap, so use the hot water method again.
Fry the Homemade Yeast Doughnuts
Heat the oil to about 350ºF (180º). If you don’t have a thermometer, test the oil with a doughnut hole. If it doesn’t start frying (bubbling) immediately, the oil is too cold, if the hole turns brown right away, the oil is too hot. Adjust the heat accordingly.
