This recipe, from Bluebird Hill Farms, was named for Marilla's famous plum puffs in the Anne of Green Gables books by L.M. Montgomery. They are a plummy muffin, dipped into butter and then cinnamon sugar; I've seen other muffin recipes called "puffs", too, and they seem to me a more likely produce from an old-timey farm kitchen than something more akin to cream puffs--which is how some fans envision plum puffs. Since there is no "official" recipe, we can only guess--but this recipe fits my vision to a "T"! Instructions for preparing plum pulp are included at the end of the recipe; it may be frozen or used for jam, as well. While the recipe doesn't specify, I'd think a cooking or dual-purpose English plum, such as Victoria, would be ideal. Times are estimated, and do not include preparation of plum pulp or cooling time.