Claim: Made out of inspiration from the Boston cream pie, the Boston cream doughnut is a doughnut with chocolate icing and a custard filling that originated in New England, United States.
Evidence: The Boston cream (pie) doughnut or donut is a round, solid, yeast-risen doughnut with chocolate frosting and a custard filling, a miniature doughnut version of the Boston cream pie. The doughnut was made out of inspiration from the Boston cream pie which was, in turn, created by chef M. Sanzian at Boston's Parker House Hotel in 1856. United States New England