A mixture of grain and water, used to convert complex carbohydrates in grain into sugars that yeast can convert into alcohol.

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638 views

Potential causes of unreliable pre-boil gravity measurement

I usually take a hydrometer reading immediately after sparge so that I can calculate total points of gravity (i.e. gravity reading * volume), and from there calculate what volume of wort I should ...
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4answers
4k views

Mashing at too High of a Temperature

I did my first all grain batch last night and went way over the desired 150s range on the temperature of my mash. It ended up being around 170f. What effects will there be from mashing at 170 (or ...
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3answers
318 views

Rice Hull pre-prep

I have heard it recommended to pre-rinse rice hulls before putting them in the mash. Mainly because they tend to be so dusty. Is that a good practice?
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1answer
183 views

Speed to collect wort from the mash tun for maximum efficiency

I want to optimize my efficiency, and I was wondering is the speed at which I collect my wort has an incidence on it. Right now I would say that I collect 1 liter of wort each 30-45 seconds. I get ...
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2answers
384 views

Should I worry about mash PH when brewing with RO water?

I always use RO water to brew. I have never checked mash PH but have become concerned since my brews have come out darker than predicted by BrewSmith. I thought (I read in How to Brew by Palmer) ...
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4answers
926 views

Effects of Grain Freshness on Brew House Efficiency

Background: My co-brewer (ScottyG) and I recently brewed our first all-grain in a converted Coleman cooler. We have over sixty batches of extract under our belts and have even made a few hard ciders ...
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2answers
1k views

Bringing mash pH down without changing mineral profile too far

I checked the pH in my mash at the end of my mash yesterday and it was 6.6 (using a calibrated electronic meter). I'm trying to work out how to get that down into a more normal range without adding ...
3
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2answers
931 views

Mash tun shape - does it matter?

Or mash tun aspect ratio, if you like. Tall and skinny, or short and wide? I know a deeper grain bed (tall and skinny) will be better for lautering purposes, but will a flatter grain bed (short and ...
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1answer
197 views

Why should I use a Decoction mash instead of a Single Temperature Infusion mash?

Why should I use a Decoction mash instead of a Single Temperature Infusion mash?
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1answer
50 views

Component of roasted malt that lowers pH

Roasted and kilned malts are often used to lower the pH of the mash. Which chemicals are created by the roasting process that have such a low pH?
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3k views

Can you mash for too long?

I'm looking at brewing an all-grain barley wine in the near future, and I'm aiming for a high ABV (13%-14% ABV). From what I've heard in discussions elsewhere, by single-infusion mashing at a lower ...
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1answer
504 views

Can beta amylase eat sugars after alpha amylase?

A bit of background -- I brewed a pumpkin ale recently. The mash temp was maintained fairly high (well above 150F) for at least a full hour. The sparge was a disastrous 3-4 hour experience (despite ...
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1answer
382 views

How does efficiency change when adding grains that are normally steeped to a mash?

Imagine this scenario: you have a an extract recipe that contains a pound of steeped caramel malt. According to http://www.promash.com/FAQ/faq_diff.html the average efficiency of steeped malts is ...
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2answers
373 views

Should I include my specialty grains in a mini-mash?

I'm planning to use up all my leftovers from recent batches, augmented with minimal newly-purchased ingredients, to make an oatmeal stout. I know I need to mash the oats, so I picked up a pound of ...
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1answer
203 views

Grains for Mashing and Grains for Steeping

Does anyone have a list they care to post that lists the "must mash" and "steepable" grains? Might be nice content for the site overall.
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1answer
217 views

What are the effects of transferring a mash before lautering?

In my latest batch I ended up with a stuck mash due to me mis-assembling the false bottom. To solve this, I transferred the mash to a bucket, fixed the false bottom, put the mash back in the MLT and ...
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1answer
249 views

What is considered to be a reasonable temperature rate change in a HERMS or RIMS system?

When brewers speak of their mashing techniques using mash temperature controlling technology, they sometimes make claims as to how fast they can get their mash from temperature 'A' to temperature 'B', ...
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2answers
380 views

Safely adding enzymes (e.g. Beano) to lower final gravity

I've heard a lot of mixed stories about people adding additional enzymes (Beano, GasX, etc) to their beers to drop the final gravity down very (sometimes undesirably) low. I've also hear mixed ideas ...
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1answer
262 views

Can boiling the entire mash achieve results similar to decoction?

With an automated mash setup, it could be fairly easy to bring the mash to a boil and cool it. I'm wondering if this could be used to replicate the results of a decoction. If mash thickness is ...
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6answers
344 views

What is the proper way to maintain temperature in a water cooler Mash tun by adding hot water?

I bought the 10 gallon water cooler from Home Depot. The hole in it is about 3/4" diamater. After discovering that Home Depot, Lowes, Ace Hardware, and etc. did not sell all the components (hose ...
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3answers
462 views

Mash-produced unfermentable sugars do add sweetness and aroma?

I read in some sources that mash conditions can influence the production of dextrins, that are not fermentable, have no taste (is that correct?) and add body to the beer. But somewhere else I read ...
2
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1answer
227 views

What is the quickest way to heat mash / sparge water?

Using a propane burner, is one of the following methods quicker / more efficient than the other? If so why? a) Heat 2.82 gallons of water from 70 degrees to boiling and then add 1.12 gallons of 70 ...
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1answer
226 views

Mixing grains before mashing?

Is it important to mix up the different types of grains before they go into the mash tun or is it okay to just dump them in separately?
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2answers
225 views

What characteristics should a bucket have to be suitable for a mash tun?

Does it need to have anything special or any food-grade bucket would do?
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3answers
123 views

When/How to Measure Pre-Boil Gravity to Determine Mash Efficiency

I routinely take my pre-boil gravity after sparging to determine mash efficiency so that I can throw in DME or Dextrose for a lower than expected yield or add water for a higher than expected yield, ...
2
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1answer
259 views

Does temperature rise time between mash steps matter?

When doing a multi-step mash, does the amount of time you take in between steps to raise the temperature make a difference? (Aside from the obvious "taking longer will make your brew day take ...
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1answer
131 views

Steel Cut v. Flaked Oats

Pound for pound, do steel cut oats deliver the same level of mouthfeel as flaked oats? I ask because I recently made some steel cut oats for breakfast and they seem to be much more gummy than normal ...
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1answer
397 views

can pH strips go bad? / 5.2 stabilizer

So I just recently started paying attention to mash pH. Took a reading of a cali common I brewed about 10 days ago during the mash, and based on the strips reading (after adding the stabilizer), I ...
2
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2answers
227 views

Lower temp Mash-out

While I was making an AG batch this weekend I had a 154 degree mash for 60 min but my mash-out temp only got up to 162 instead of 170. What sort of effect will this low mash-out temp have on the beer? ...
2
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1answer
266 views

Mash rests and water to grist ratio

I am planning brewing a recipe I found of a porter that I am really excited about. The original recipe says that you should do a rest at temperature below final mash temperature for a bit. After some ...
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3answers
628 views

How much strike water can I expect to lose to grain hydration?

Let's say I have a pound of milled barley malt. Let's say American 2-Row, for the sake of specificity. And let's say I have a gallon of warm/hot water that I mix with the grain and let sit for some ...
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2answers
2k views

Insulating My Mash Tun

I have a pretty typical converted keg mash tun. Over the course of a sixty minute mash it loses 8-10º F. My previous mash tun, a converted cooler would only drop a few degrees and I would like to be ...
2
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1answer
140 views

I forgot to calculate for temperature loss during mash in? How will this affect my beer?

Mash in temperature was supposed to be 152 degrees. I forgot to adjust for temperature loss add simply mixed my grains with 152 degree water. I never calculated the final temperature. I did the same ...
2
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1answer
225 views

Suggestions for inline heating unit housing for wort circulator?

I built an inline heating element assembly using some 1" copper pipe, a 1" threaded female fitting and some 1/2" fittings. The idea is, wort comes in from the bottom 1/2" fitting, flows over the ...
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1answer
318 views

Missed my target gravity and volume by a mile

So, I know there were lots of things I could have done to repair the situation had I been prepared (lesson learned, I'll be having DME on hand from here on out), but I'm a little more interested in ...
2
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1answer
292 views

Calculating Infusion Temperature After Protein Rest

I'm using this infusion calculator to determine how much and what the water temperature should be when adding water to my mash tun. A recipe I'm following calls for a protein rest at 122 degrees F for ...
2
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1answer
268 views

Double decoction mash profile for full bodied beer

I'm planning to brew a Single Malt and Single Hop (SMaSH) beer using Canada Malting's Superior Pilsner and Czech saaz hops. I'd like the resulting beer to be full bodied, like Pilsner Urquell, but I'm ...
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votes
1answer
125 views

Glucan rest necessary

I am brewing all-grain and have in the past always held a glucan rast when mashing. I am trying to speed up my brewing process and that rest of course slows me down quite a bit because of the heating ...
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2answers
54 views

Lautering: Filter first runnings using a strainer

I am following the online course to all grain brewing on "craft beer and brewing" and in the lautering sectiong they explain to collect the first runnings and to put them back on top of the grain bed. ...
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2answers
262 views

Gravity reading much lower than exected: why?

Okay, so my friend and me made an experiment yesterday. We wanted to brew a >20%, 300+ IBU IIPA. Yeah yeah... I know :) Now to the question. We used 10.5kg of grain for 26.25 liters of water for the ...
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2answers
142 views

Late Mash Additions for Color

I was looking for color in a recipe without any of the roastiness from dark crystal malt I would get from using it as steeped specialty grains. When I asked the manager at the LHBS about cold ...
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3answers
228 views

How to make more beer than I can boil?

I will soon need to buy some more equipment, but I want to think it a little bit what I really need to buy and in the meantime I will try some workaround. I was thinking of brewing mash/extract ...
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3answers
139 views

A Bit Of Grainy/Sweet Flavor In My Imperial IPA

I brewed a Dog Fish Head 90 min a month ago and it turned out pretty good for my first all grain. The only thing I noticed was a slight/mild grain flavor, especially when it gets warmer, and it takes ...
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3answers
182 views

Foam and bubbles

my first mash. Combined all the ingredients in a "recipe" I followed. Added the yeast and it started working rather quickly. My airlock is due to come in the mail in 2 days. So I did the whole ...
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2answers
359 views

Most Feasible method to add Grains of Coffee in Porter Style

I have seen someone added coffee in a stout beer, I want to use it in batch of my beer (18 liters), to do so I have two ideas: To combine grains of coffee with mash. Make an espresso and add it to ...
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2answers
4k views

Importance of Mash and Sparge Water Volumes using Batch Sparge

I'm new to all grain brewing and one of the things I haven't been able to find much information on is the importance of water volumes for the mash and sparge steps. There are a lot of calculators ...
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2answers
548 views

What's the minimum mash time?

Listening to an episode of Basic Brewing last night, I heard a guest say that most of the conversion in the mash happens in the first half, and that the mash can thus be cut down as short at 45 ...
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1answer
107 views

How does the attenuation limit from mash temperature affect yeast attenuation?

Like, for example, if you select a yeast with an average attenuation of 80%, but you mash at 160, which limits attenuation to 76.8%1, would the limit simply be the lower of the limit or the average ...
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2answers
127 views

How to Compensate for Higher than Expected Extraction Efficiency

What is the best way to handle a higher than expected extraction efficiency without compromising the flavor of the beer? If I'm brewing a blonde ale for example, aiming for a 72% extraction ...
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2answers
148 views

Effect of Long, High, Decling-Temperature Mash on Wort

Due to time constraints, I need to do a two- to 2-1/2 hour unattended mash, and then return to lauter, etc. I plan to do a single batch sparge. I am looking for a slightly-less fermentable wort for ...