UISCE BEATHA
Aaahhhhh the whiskies of Islay - Laphroaig - "a whisky of stupendous complexity - of sweet malt, Islay reek, Islay salt, that flows across the palate and, finally rocks your foundations with a little blast of incredulity at the journey afforded by that little splash of gingery liquid."
Or Lagavulin - "a fabulous complexity of sweet mellow malt, Islay peat reek and a few of those fine, tinsy grains of sea salt". Made with the finest water that has passed though the moss & peat and fallen over a hundred water falls to reach the distillery on the south side of the island of Islay, close to the sea ! !
or "The Water of Life"
Black Bush from the Emerald Isle.
And I must confess to have never tasted this "sourmash" of which you speak