Vauxhall Slice

'Vauxhall slice' is an expression for slices of stale, pale coloured, dry ham cut
very, very thin as served at Vauxhall Gardens.

"I was now no longer at a loss for the meaning or propriety of the proverbial expression, a Vauxhall slice; for the ham was shaved so thin, that it served rather to excite than to allay the appetite." (a quote from Benjamin Silliman's A Journal of Travels in England, Holland, and Scotland...1805 & 1806)