Congeners

Chemical compounds produced during fermentation and maturation. Congeners include esters, acids, aldehydes and higher alcohols. Strictly speaking they are impurities, but they give whisk(e)y its flavour. Their presence in the final spirit must be carefully judged; too many would make it undrinkable.

A Age , Ageing , Alcohol by volume/ABV , Amylase , Angels' share

B Backset , Ball of malt , Beading , Beer , Beer still , Blending , Bond , Bothie , Bottled in bond , Bourbon , Brewing

C Cask strength , Charcoal mellowing , Charring , Chill filtration , Column still/continuous still , Congeners , Couch , Cut , Cytase

D Distillation , Doubler , Draff , Dram , Drum maltings

E Enzymes

F Feints , Fermenter , Fillings , Floor maltings , Foreshots , Furfurol , Fusel oil

G Gauger , Grain whisky , Green malt , Grist

H Heads , High wines

J Jigger

K Kieve , Kilning

L Leaching , Lincoln County Process , Liquor , Lomond still , Low wines , Lyne arm

M Malt , Malt whisky , Malting , Maltings , Marrying , Mash , Mash bill , Mash tun , Mashing

N New-make spirit , Nose , Noser

O Organic whisk(e)y

P Peat , Peated malt , Pot ale , Pot still , Premalt

Q Quaich

R Reflux , Rummager , Run , Rye whiskey

S Saladin box , Single barrel whisk(e)y , Single malt whisky , Small grains , Sour mash whiskey , Spent beer , Spirit safe , Spirit still , Steep , Stillage , Straight whiskey , Sweet mash

T Tails , Tennessee whiskey , Thin stillage

U Uisge beatha

V Vatted malt , Vatting

W Wash , Wash back , Wash still , Worm , Worts