Malt Whiskey Grain Bill?

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J A
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Malt Whiskey Grain Bill?

Post by J A »

I'm looking to do a run of malt whiskey and I'm wondering what a typical grain bill looks like. I'm aiming for Irish-style, maybe with a hint of peat.
Is it better to start with a single malted barley? A mix of malted and unmalted barley, maybe flaked? Is it useful to include some malted or unmalted wheat or oats? Is corn a typical ingredient?

I'm not too concerned about hitting any specific style guidelines or mimicking any particular brand but I want to come up with something that's interesting and will lend itself to testing a few different fast-aging techniques. Eventually, I'll try to make enough to fill a small barrel or other longer-term aging vessel but for now I'll keep batches small and work on recipe and process.

Any insights appreciated! :)
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Peter_stanaway
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Re: Malt Whiskey Grain Bill?

Post by Peter_stanaway »

For a basic recipe you could go for Golden Promise mash to an SG of about 1.065 ish.

Irish Pot Style typical uses up to 50% umaltedted barley or malted wheat

For peat I would start with 10 - 20% peated malt

So maybe

Golden Promise 50%
Flaked barley ( unmalted ) 30%
Medium peated 20%
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J A
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Re: Malt Whiskey Grain Bill?

Post by J A »

Peter_stanaway wrote: Thu Dec 04, 2025 4:21 pm For a basic recipe you could go for Golden Promise mash to an SG of about 1.065 ish.

Irish Pot Style typical uses up to 50% umaltedted barley or malted wheat

For peat I would start with 10 - 20% peated malt

So maybe

Golden Promise 50%
Flaked barley ( unmalted ) 30%
Medium peated 20%
Good info. Thanks!
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J A
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Re: Malt Whiskey Grain Bill?

Post by J A »

I've been needing to brew a lager to take advantage of easier temp control in the cooler weather and realized that I could double up and piggyback a 5-6 gallon batch of a strong whiskey wash. I used my typical malt bill though instead of Pilsner malt, I used an American premium 2-row. The malt consisted of almost all 2-row with around 10% Vienna malt and enough acidulated malt to control pH.
I did a short boil to settle out proteins, though this is a relatively small batch and even without the boil, foaming and puking shouldn't be much of a problem in my still pot. Right now it's chugging away in a fermenter. I'm eager to see how it turns out. :)
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