If the double bond is broken heterolytically, formal charge pairs result, as shown in the other two structures. The preferred charge distribution will have the positive charge on the less electronegative atom (carbon) and the negative charge on the more electronegative atom (oxygen).
Single malt Scotch. Single malt Scotch is single malt whisky made in Scotland. To be a single malt scotch the whisky must have been distilled at a single distillery using a pot still distillation process and made from a mash of malted grain. In Scotland, the only grain allowed to be used in a single malt whisky is barley.
The Types of Whiskey. Malt Whiskey. Malt whiskey is the oldest style of whiskey distilling, usually made from 100% barely malt, although it can be distilled from a mash. This version is made all over the world, although when made in Scotland, itâs called Scotch.