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11 votes
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Why did I miss my high target gravity? By quite a lot. Is it just my brewhouse efficiency?

Mostly the high temperature. You started out at 73° C, which is already at the high side for the alfa-amylase enzymes, which convert the starches into complex sugars. While at this moment, the beta-...
chthon's user avatar
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6 votes
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How important is it to hit a recipe's target OG? What if my OG is too high?

Yes, it will to some extent. Not only will the higher alcohol affect it, but your beer will also be less hoppy and bitter than you intended it to be. Yes, you should always strive to hit your OG, ...
Denny Conn's user avatar
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5 votes

Why did I miss my high target gravity? By quite a lot. Is it just my brewhouse efficiency?

More bad news: If you didn't like the OG, you'll probably like the FG even less. This is because higher mash temps produce more complex (and less fermentable) sugars. You want to be making ...
Robert Zormeir's user avatar
5 votes

Efficiency discrepancy

"... so far above an efficiency that BeerSmith is aware of" I'm not exactly sure what you mean by this, I'm positive BeerSmith is aware of efficiencies above 73%. It's very common to get higher ...
Franklin P Combs's user avatar
4 votes
Accepted

Poor mash efficiency - help please

Forget about the mash timer. A mash is done when there's no more starch. The finer the grain crush, the more mash efficiency you will get. Up until it's so fine that it gets stuck. Finding that ...
Evil Zymurgist's user avatar
4 votes

Poor mash efficiency - help please

Water chemistry, particularly mash pH, can have a large effect on efficiency. My first step would be to check the pH of the mash and make sure you're in the 5.2-5.8 range (ideally closer to the low ...
Frazbro 's user avatar
3 votes

Pale Ale All Grain, FG not achieved

Refractometer does not read correctly when alcohol is present. It is important only to measure in Brix, never specific gravity. Then use the following conversion calculator to determine the true ...
dmtaylor's user avatar
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3 votes
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Calculating Efficiency manually using metric system

To start with, I'd figure out the yield as a percentage. I find this number way more useful, especially as maltsters generally provide a yield as a percentage on their analysis sheets. To do this, ...
Frazbro 's user avatar
3 votes

How to get higher gravity

Undermodified 6-row barley by itself doesn't have enough enzymes to give you complete conversion of starches to sugars, so you end up with low gravity. Add some highly modified malt (i.e. one with ...
GigaFemto's user avatar
  • 344
3 votes

Are protein rests worthwhile in BIAB?

I do BIAB, and I don't think protein rest has much with extraction efficiency. Mashout temperature has, however: if wort has lower viscosity due to higher temperature, it will better flow from the ...
Roman's user avatar
  • 1,498
3 votes

Efficiency discrepancy

I think that the issue is how both are calculated. http://www.brewersfriend.com/brewhouse-efficiency/ is not accounting for losses in your equipment while beersmith is accounting for losses. I ...
jsolarski's user avatar
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2 votes

Efficiency discrepancy

I do BIAB and my efficiency has varied around 70% from 65% to 75%. I've found that something as simple as stirring my mash 3 times in the 60 minute rest and not stirring it can affect that number ...
nemmy's user avatar
  • 344
2 votes

What effect do water ions have on mash efficiency *other* than adjusting Ph?

IMHO it is the pH of the mash is the important thing. pH of the source water is not so important - as long as it is not ridiculously high of low. Barley and wheat amylase enzymes work optimally in ...
barking.pete's user avatar
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2 votes
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Can scaling down a recipes grain bill lead to increased mash efficiency in a smaller pot while maintaining the same final batch size?

Yes It's much easier to apply high efficiency methods in smaller volumes. The biggest gain will be from being able to crush grains to near flour gauges. Allowing much more of the endosperm to have ...
Evil Zymurgist's user avatar
2 votes

RIMS declining efficiency

RIMS can denature your enzymes. The biggest risk with a RIMS is the small volume or wort that is heated at a time. The result is often the enzymes are denatured because of the contact with the ...
Evil Zymurgist's user avatar
2 votes

If I’m using a high diastatic malt, was it still necessary to add some acid malt into the mash?

Diastatic power refers to the enzymatic power of the malt itself – its ability to break down starches into even simpler fermentable sugars during the mashing process, but that's not related in any way ...
gcampos's user avatar
  • 106
1 vote

If I’m using a high diastatic malt, was it still necessary to add some acid malt into the mash?

It depends on the purpose of the Acid Malt in the recipe. Not only it has high diastatic power, this malt also affect pH of the mash, so depending on the water pH, this malt could be useful... ...
Philippe's user avatar
  • 4,806
1 vote

Calculating mash conversion efficiency using Brewers Friend calculator

I've punched your numbers in, and it looks like 26.5L is probably close to the right number. It's not a very clear calculator though, so I would recommend heading to http://braukaiser.com/wiki/index....
Frazbro 's user avatar
1 vote

Poor mash efficiency part 2

I suspect that your robobrew (relatively) sucks at the mash. I have a few different mash vessels and I get different efficiency from the square cooler than the nice round Igloo. The Igloo does a ...
Pale Ale's user avatar
  • 397
1 vote

Poor mash efficiency part 2

Are you confident that your recipe design calculations are correct? Are you confident that your grain specs are right and that the grain is of adequate quality? All of the measures you have taken ...
Frazbro 's user avatar
1 vote

If I’m using a high diastatic malt, was it still necessary to add some acid malt into the mash?

Using acidulated malt is never necessary per sé, unless you want to stick to the medieval German Reinheitsgebot. Lactic or phosporic acids are frequently used to correct the pH of the mash (especially ...
Frank van Wensveen's user avatar
1 vote

How to get higher gravity

With all additional information posted in the comments, I will try to answer the question. First, 12°Plato is equal to a SG of 1.048. However, the gravity was taken at 30°C, so using this calculator ...
Philippe's user avatar
  • 4,806
1 vote

What effect do water ions have on mash efficiency *other* than adjusting Ph?

Water salts are not going to effect lautering efficiency to any large degree. Mash efficiency is a made up term that takes into account both lautering efficiency and conversion efficiency. It sounds ...
brewchez's user avatar
  • 36.2k
1 vote

AG brewing newbie, can only hit 50% efficiency, what's going wrong?

That part where you said that "it got a bit hot at first" is likely your culprit. The enzymes that break starches down into sugars (Amylase) don't like getting too hot and they die off. It's far ...
CharlieHorse's user avatar
  • 1,152
1 vote
Accepted

Re-using aroma hops (whole)

Might be possible, if you are brewing two batches, one just after another. If you will try to store wet hops, you are giving mold time to grow. Isomerisation continues to occur when hops are hot, so ...
Mołot's user avatar
  • 3,718
1 vote

What Calcium ppm is required in the mash for alpha-amylase stability and mash efficiency?

While low calcium content might end up reducing the speed and tendency for yeast to flocculate, it isn't really making beer otherwise cloudier. High calcium content also does not cause cloudy beer. ...
Martin Brungard's user avatar

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