"Jason" wrote in message
. uk...

"Cicero" wrote in message
o.uk...

...
==========================
You might consider incorporating unglazed earthenware pipes or tiles into
your design. Old fashioned butter and milk coolers were made from clay
and
had to be soaked in water periodically but worked pretty well. A scaled
up
version might be possible.

Yes, I have one of those. Before we discovered 'Lurpack Spreadable', it
kept the butter at just the right temperature throughout the summer. It
just needed topping up with water every couple of days.

-- JJ


I think one brand was called something like "Osokool"....

It was a white block of something like a cubic foot, walls about an inch or
so thick with a depression in the top into which water was poured to keep
the whole thing damp. Evaporation of the water from the porous walls kept
the innards about 10 degrees cooler inside...

Nick