Green’s Dictionary of Slang

hasty pudding n.2

[SE hasty pudding, a pudding made of flour stirred into boiling milk or water to the consistency of a thick batter]

a muddy road.

[UK]Grose Classical Dict. of the Vulgar Tongue ms. additions n.p.: Hasty Pudding. [...] Figuratively, a wet, muddy road: as, The way through Wandsworth is quite a Hasty Pudding.
[UK]Grose Classical Dict. of the Vulgar Tongue (2nd, 3rd edn).
[UK]Lex. Balatronicum.