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Home Brew Forums > Home Brewing Beer > Beginners Beer Brewing Forum > Boiled the grains
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Old 05-13-2010, 05:41 PM   #1
AbrahamDrinkinBrigade
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Default Boiled the grains

In the brewing directions I use every time I brew, it says in bold print Do Not Boil the Grains! during the steeping step.

I accidentally let the grains boil! For at least a couple of minutes!

I can't find anywhere what actually happens if I boil the grains, just that I'm not supposed to do it. Why? Can I just keep going and everything will turn out ok?

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Old 05-13-2010, 05:44 PM   #2
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I wouldn't. I would stop, purchase new grains and start over.

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Boiling will release excess tannins from the grains which will give the finished beer an astringent aftertaste.
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Old 05-13-2010, 05:47 PM   #3
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Heating the grains above 170F can increase the astringency in your beer. Basically, causing a bitter off flavor. I wouldn't say that boiling the grains for a few minutes is going to ruin your beer. You might as well continue on as planned. It just might not taste exactly how you expected.

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Old 05-13-2010, 06:17 PM   #4
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Thanks! I'm going to keep pushing forward, out of limited time and stubbornness.
Also it seems that posting this brings up the similar threads linked below, which I didn't find before through skimming. hm

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Old 05-13-2010, 06:33 PM   #5
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I accidentally boiled my grains for a chocolate coffee stout and it turned out to be one of the best beers I've made.

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Old 05-13-2010, 06:37 PM   #6
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I think it would depend on WHEN you boiled the grains. If you dropped your grains and they were at a "normal" temp for 60 minutes and then you boiled them by accident, you are basically just pulling a ton of tannins out of the grain and you're going to get a ton of bitter like someone mentioned.

If you added your grains and boiled them within five minutes, you are still pulling all of the above-mentioned tannins but you're not going to pull any sugars out of those grains. Once you get over about 161-162, you're wiping out your enzymes and you won't get any conversion to sugar... and you'll miss your target OG by perhaps a little (if you're recipe is mostly dried extract) to a TON if the grain makes up the bulk of your recipe.

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Old 05-13-2010, 07:53 PM   #7
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Originally Posted by BlueSunshine View Post
I accidentally boiled my grains for a chocolate coffee stout and it turned out to be one of the best beers I've made.
I boiled a pound of coffee grounds, a pound of flaked barley and a half pound of roasted barley in an extract coffee stout batch once.

Came out great! Nice and bitter!

That being said, I think that boiling the grains could be bad for a lighter colored beer.
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