Legend blames a semla binge for killing King Adolf Fredrik in 1771 — though historians now think a stroke, not fourteen buns swimming in warm milk, was the real culprit.
A cardamom-spiced wheat bun is hollowed out, filled with almond paste and whipped cream, then dusted with powdered sugar. Stockholm's konditori bakeries pile their windows with them from just after Christmas until Fat Tuesday (fettisdagen).