Doughnuts are one of those pastries that seem too advanced for the average cook. But yeasted doughnuts, glazed or filled, just require a few tools and facility with a deep fryer. Above our friends over at culinary lab Chefsteps break down how to make a perfect facsimile of a Krispy Cream-style doughnut. And here's their take on a an old-fashioned cake doughnut. Check it out.