The distillery loses some whiskey to the angel's share during the aging process.
На винокурне часть виски теряется за счет доли ангела во время процесса выдержки.
Definitions
The 'angel's share' refers to the portion of a distilled spirit (such as whiskey or brandy) that evaporates from barrels during the aging process. This loss is said to be taken by the angels, hence the name.