E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Joan Cromwells kitchen-stuff tub. A tub of kitchen perquisites. The filchings of servants sold for market pennies. The Royalists used to call the Protectors wife, whose name was Elizabeth, Joan Cromwell, and declared that she exchanged the kitchen-stuff of the palace for tallow candles.