image/svg+xml Scotch must be made from malted barley but other whole grains such as corn, rye or wheat may be added Scotch must be distilled in Scotland using only yeast to no more that 94.8% (190 US proof) Cheat Sheet Scotch The Uisce Beatha Scotchmust be produced, barrelled and bottled in Scotland Scotch must be bottled at a minimum 40% (80 US proof) Scotch must be wholly matured in oak casks under 700 lires Scotch must be aged for a minimum of 3 years in Scotland