For the batter and a 24 cm-in-diameter springform pan: 320 g of all-purpose flour 90 g of cocoa powder 250 g of sugar 150 g of butter 150 g of sour cream 2 large eggs 230 ml of milk 1 tsp of . The whoopie pie is the official state treat of Maine (not to be confused with the official state dessert, which is blueberry pie).  Gob [the term indigenous to the Pittsburgh region] has been trademarked by the Dutch Maid Bakery in Johnstown.. Ever heard of a whoopie pie? They're a bit like a macaroon but with a more cake-like texture. Hugely popular Stateside, the name comes from when Amish women would put them in farmers' lunchboxes and they'd supposedly shout 'whoopie' if they found one in their box!. The whoopie pie (alternatively called a black moon, gob [term indigenous to the Pittsburgh region], black-and-white, bob, or "BFO" for Big Fat Oreo [also recorded as "Devil Dogs" and "Twins" in 1835 ]) is a US baked product that may be considered either a cookie, pie or cake.. . .