Edward Vernon (1684-1757),Vice-Admiral of the Blue and Commander in Chief of H.M. Ships in the West Indies, ‘ventured to attack that formidable Dagon, Drunkenness’ by introducing the practice of diluting the issue of Naval rum in an order dated 21st August 1740.The Admiral was known as ‘Old Grog’: a nickname said to arise from his invariable custom of wearing a grogram boat-cloak at sea. In turn, the mixture of rum and water received the name ‘grog’. The Compleat Imbiber 5, Ed. Cyril Ray 1962
Grogram, or grosgrain, was traditionally woven with a thick woollen or mohair weft over a finer silk or cotton warp.This newly-devel- oped fabric uses a weft of natural undyed grey Herdwick wool from sheep raised in the UK, woven through a finer ecru cotton warp, giving a slight horizontal rib.As the cotton warp yarn shows dyes more clearly than the wool weft, dyed garments retain the speckled character of the Herdwick wool.