Host Christopher Kimball visits the Dorset Union Store in Dorset, Vermont, where doughnuts are baked fresh daily. Then, test cook Bridget Lancaster uncovers the secrets to making easier muffin tin doughnuts. Next, tasting expert Jack Bishop challenges Chris to a tasting of grapefruit juice. Then, equipment expert Adam Ried reveals his top picks for pod coffee makers. And finally, test cook Julia Collin Davison shows Chris how to make whole-wheat blueberry muffins.