barley content in whisky from barley grains

Question

barley content in whisky from barley grains

Jon

2014年1月29日 17:37

Of the whiskey in a barrel, what % of it is barley?

From what I understand, to make wort only 20% of spent grain is left. This leads to a figure of 80% of the grain dissolved in the wort.

After the yeast is added, the wort is distilled, separating the alcohols and leaving stuff behind. Seemingly the barley that has dissolved in the wort, does not get distilled and gets left behind?

What is the original ratio of water liters to kg of grain? After distillation, what % of the mixture is distilled off, and what % is left behind? What would the barley grain makeup of the whiskey mixture be, or just alcohol is distilled taking the converted barley sugars, but leaving all the "barley juice" behind?

Topic whiskey barley wort mash homebrew

Category Mac

FishesCycle · Accepted Answer · 2014年1月29日 17:37

According to this ProBrewer page about whiskey distillation, the initial mash is 100Kg of malted barley and 600 litres of water, for a 6:1 ratio. This yields 80 - 87 litres of 80 proof spirit.

As for the waste, U.S. 2-row malt has an extract potential of 79%, so 21% of the malt (modulo conversion efficiency), by weight, is not converted to sugar. That would be 21 Kg of spend grain in our theoretical batch. The malt will absorb some water (around 1 l/Kg according to BYO), so the total weight of the spent grain will around 121 Kg.

Chino Brews · Accepted Answer · 2014年1月29日 15:57

To sort of answer part of your question, in making scotch whiskey for example, the wort is fermented into a "Wash", which is double-distilled into a "new make spirit" containing 60-70% abv., which is then diluted with water to approximately 63.5% abv before being put into barrels for aging. Source: Wikipedia.

barley content in whisky from barley grains

About