In the malt or mash-tun.
Mashing This is the process of mixing the grist and the water in a vessel called a mash tun at around 65ºC.
This venerable dram is from the family owned distillery at Ballindalloch that has the largest mash tun in Scotland.
The spent grain from the mash tun is taken to a local small holding & given to sheep & cattle.
The lauter tun improves upon the mash tun in terms of surface area by increasing the diameter of the vessel.