The State Fair fires up its vats of oil but once a year, so allow Mel-O-Glaze to fill the gap. The recipe is basic--no cardamom or other secret ingredient--but a doughnut is not a recipe thing, it's a time thing. Researchers have produced algorithms showing that its quality declines proportionally to (and exponentially with) the number of minutes it's been out of the fryer. And since, unlike many of its counterparts, Mel-O-Glaze makes doughnuts all day long (not just in one fat batch in the morning), you can have that State Fair fresh-from-the-grease experience all day long, seven days a week. Located in the Minneapolis Police Department's Third Precinct, on Minnehaha Parkway between Hiawatha Avenue and Lake Nokomis.