A Sundae on Sunday for Aki

sundae
noun
a dish of ice cream with added ingredients such as fruit, nuts, syrup, and whipped cream. ORIGIN late 19th cent.(originally U.S.): perhaps an alteration of Sunday , either because the dish was made with ice cream left over from Sunday and sold cheaply on Monday, or because it was sold only on Sundays, a practice devised (according to some accounts) to circumvent Sunday legislation.