Bow Wow Sauce or Wow Wow Sauce is a British

United Kingdom

The United Kingdom of Great Britain and Northern IrelandIn the United Kingdom and Dependencies, other languages have been officially recognised as legitimate autochthonous languages under the European Charter for Regional or Minority Languages...

 sauce composed of stock, vinegar

Vinegar

Vinegar is a liquid substance consisting mainly of acetic acid and water, the acetic acid being produced through the fermentation of ethanol by acetic acid bacteria. Commercial vinegar is produced either by fast or slow fermentation processes. Slow methods generally are used with traditional...

, port wine

Port wine

Port wine is a Portuguese fortified wine produced exclusively in the Douro Valley in the northern provinces of Portugal. It is typically a sweet, red wine, often served as a dessert wine, and comes in dry, semi-dry, and white varieties...

, mustard

Mustard (condiment)

Mustard is a condiment made from the seeds of a mustard plant...

 and pickled walnut

Walnut

Juglans is a plant genus of the family Juglandaceae, the seeds of which are known as walnuts. They are deciduous trees, 10–40 meters tall , with pinnate leaves 200–900 millimetres long , with 5–25 leaflets; the shoots have chambered pith, a character shared with the wingnuts , but not the hickories...

s usually served with roast meats. Developed in the Cotswolds

Cotswolds

The Cotswolds are a range of hills in west-central England, sometimes called the Heart of England, an area across and long. The area has been designated as the Cotswold Area of Outstanding Natural Beauty...

 village of Painswick

Painswick

Painswick is a small town in Gloucestershire, England. Originally the town grew on the wool trade, but it is now best known for its parish church's yew trees and the local Rococo Garden. The town is mainly constructed of locally quarried Cotswold stone...

 for the occasion of a feast with the neighboring town of Stroud

Stroud, Gloucestershire

Stroud is a market town and civil parish in the county of Gloucestershire, England. It is the main town in Stroud District.Situated below the western escarpment of the Cotswold Hills at the meeting point of the Five Valleys, the town is noted for its steep streets and cafe culture...

 during which Painswick revenged itself upon Stroud's accusations of dog

Dog

The domestic dog is a domesticated form of the gray wolf, a member of the Canidae family of the order Carnivora. The term is used for both feral and pet varieties. The dog may have been the first animal to be domesticated, and has been the most widely kept working, hunting, and companion animal in...

 sacrifice to a shepherd god by the serving of a pie

Pie

A pie is a baked dish which is usually made of a pastry dough casing that covers or completely contains a filling of various sweet or savoury ingredients....

 made of puppies.

There is also a fictional "Wow Wow Sauce" often mentioned in Terry Pratchett

Terry Pratchett

Sir Terence David John "Terry" Pratchett, OBE is an English novelist, known for his frequently comical work in the fantasy genre. He is best known for his popular and long-running Discworld series of comic fantasy novels...

's Discworld

Discworld

Discworld is a comic fantasy book series by English author Sir Terry Pratchett, set on the Discworld, a flat world balanced on the backs of four elephants which, in turn, stand on the back of a giant turtle, Great A'Tuin. The books frequently parody, or at least take inspiration from, J. R. R....

 series as being a favourite condiment of Archchancellor Ridcully of Unseen University

Unseen University

The Unseen University is a school of wizardry in Terry Pratchett's Discworld series of fantasy novels. Located in the city of Ankh-Morpork, the UU is staffed by a faculty composed of mostly indolent and inept old wizards. The university's name is a pun on the Invisible College...

. The description and ingredients suggest that it is decidedly different from the Roundworld version, being very spicy and composed of a great many peppers.