Questions tagged [mash]

A mixture of water and crushed grains (usually malted) in which enzymes convert complex carbohydrates into simpler sugars that can be utilized by yeast during fermentation.

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36
votes
17answers
60k views

What can I do with my spent grain after mashing?

After brewing a batch of beer, I always end up with ~14 lbs of spent grain that I usually just toss in a pile in the corner of the yard. Are there better things to do with it (i.e. cooking, baking, ...
16
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6answers
11k views

All my all-grain batches produce a bitter/astringent, dark, almost burnt off flavor that ruins every batch, from light pilsner to dark belgians

I'm scratching my head trying to figure this one out. Here's the story: I started brewing extracts, and they all came out great. I wanted to get into all-grain so a last year I ordered myself the ...
14
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5answers
17k views

Can I skip the mash out replacing it by sparging?

I'm a new homebrewer and have a newbie question: can I skip the mash out time just replacing it by sparging since the water temperature is the same? What kind of things can happen doing this? Thanks!
13
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3answers
8k views

What is the point of mashing out?

I know it stops the enzymes from breaking down any more sugar, but is there any other point to it? Will I notice any difference in the final product if I just got straight to sparging? Also, if my ...
10
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2answers
14k views

What is a protein rest?

I am new to all grain brewing and mashing, however I am about to brew a Belgian Witbier (Northern Brewer all grain kit) and I have a question about the mash schedule. I have only done a single step ...
10
votes
3answers
539 views

Need help accenting the “clove” character of my Hefes

So I enjoy the heck outa making Hefeweizens. Its a great style and very wonderful when fresh. However, my Hefe's never seem to hit that "clove" note properly, they always lean much more towards the "...
9
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5answers
3k views

Over attenuated all grain beers

I'm having a problem with all my beers regardless of style getting over attenuated. I've been raising my mash temps up to 4° above each beers style (up to 158° or so) to compensate with no luck. I've ...
9
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3answers
6k views

Is the iodine test for starch conversion pointless?

Looking around the web there seems to be a lot of mention of the use of the iodine (starch) test at the end of your mash. Is it actually useful (i.e. is it reliable)? There have been times when I ...
8
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3answers
3k views

Oatmeal stout: Steeping or mash?

Ladies and Gentlemen of Homebrewing, I was cruising my Google+ account, and I am stalking (I mean following/stalking) Wil Wheaton, and I noticed he is a homebrewer! Tonight he posted a question. I ...
8
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3answers
432 views

Small Space & Apartment Brewing: Mashing

Given the limited space of an apartment, how do you mash in cramped quarters? Do not consider budget to be a factor. This is the second question in a series of discussions about small-space brewing. ...
8
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4answers
6k views

What are the pros and cons of adding specialty grains to the mash?

When all-grain brewing, you typically add all your grains to the mash, right? Is there ever a time when you leave some of the specialty grains out and steep them instead? What are the pros and cons ...
8
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2answers
447 views

What are the gelatinisation temps for vegetable starches?

I am planning on doing some veggie brews and would be interested to know what the gelatinisation temps are for potato, sweet potato, carrot, parsnip, beetroot, etc...
7
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4answers
1k views

Are the terms “dry”, “low FG” and “drinkable” synonymous?

Hopefully this doesn't fall under "opinion" but I believe this will help alleviate some questions on mashing/fermentation techniques. I guess you could break this question into parts. Also the term "...
7
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2answers
674 views

Does a longer mash time lead to more fermentable wort?

I saw a reference to this recently and took pause. As I understand it, mash temp and the effects it has on the various enzymes effect fermentability (that is, the amount of fermentable vs non-...
7
votes
3answers
2k views

When formulating an AG recipe, how do you determine mash thickness?

I just did my first AG brew today. It went very well! My question comes with the mash. I know normally, you determine your mash thickness with 1.25-1.5 quarts per pound of grain. If I were to use, ...
7
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2answers
802 views

Preventing a Stuck Sparge

What steps pre-mash can be taken to limit the likelihood of a stuck sparge?
7
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3answers
1k views

Do I need to continuously measure the temperature of my mash tun?

From what I understand, the all-grain brewer warms up water to a particular temperature (usually 10-15*F over the strike temperature), adds this warm water to the grains in a mash tun, in an attempt ...
7
votes
3answers
3k views

Using commercial (breakfast) cereals in a mash

This question looks similar to Using flakes in a mash, but is not actually the same. I was thinking, if someone runs out of maize flakes, and definitely wants to use some for his mash, what happens if ...
7
votes
6answers
3k views

Can you mash bananas?

I've been thinking about making a wheat-beer with bananas and a little bit of chocolate malt. My question is can you mash bananas in the mash-tun to convert the sugars/starches and get more banana ...
7
votes
4answers
15k views

How can I raise my mash pH with something other than chalk or baking soda?

I recently moved to Rhode Island and my mash efficiency has suffered. The main part of my process that has changed is the water. The pH as measured by colorpHast strips (and two other off brands) ...
7
votes
5answers
6k views

How soon after mashing do I need to start my boil?

I'd like to get 2 full boils from 1 mash. Can I keep the 2nd runnings overnight for boiling the following day? If so, what is the best way to store it. In general, how long can wort be kept after ...
7
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4answers
2k 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 ...
7
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3answers
927 views

Does a smaller false-bottom affect efficiency?

Last night I picked up a 10-gallon cooler mash tun. It was supposed to come with a 12" false bottom, but the LHBS was out of those. Instead they offered me a 10" false bottom, saying that it would ...
7
votes
2answers
667 views

Mashing in food-grade plastic fermentation bucket

So I have been dabbling with the use of my sous vide immersion heater for maintaining a perfect mash temperature (it's pretty unbelievable how efficient and accurate these guys are). I have only been ...
7
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2answers
1k views

How do I adjust mash temperature and thickness to add body to a beer?

My most successful brew to date has been Northern Brewer's Scottish 80/- extract kit. It was a dead ringer for Belhaven, but lacked Belhaven's body and mouthfeel, maybe due to the fermentability of ...
6
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4answers
4k views

Should the grain or strike water be added to the mash tun first?

I've always added my grain to my MLT cooler first, then dumped the strike water on top (I don't have a sparge arm). I calculate my strike temps based on the grain temp and initial cooler temp, so I ...
6
votes
4answers
4k views

Mash Efficiency vs Brewhouse Efficiency

I'm trying to understand the difference between Mash Efficiency and Brewhouse Efficiency. Is Brewhouse Efficiency essentially the efficiency of Mashing AND Lautering, whereas Mash efficiency would be ...
6
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2answers
245 views

Homebrewing: Decoction Mashing

Many beers, especially German, are produced with a method called decoction mash. In that, the rising of mash temperature is achieved each time by talking a portion of the MASH, boiling it, and adding ...
6
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4answers
4k views

What makes my mash tun smell like vomit?

If I leave my mash tun unattended for a few days after brewing it smells like a dead animal covered in vomit. What is the name of the bacteria/fungus/other that excretes this smell?
6
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3answers
2k views

How do I do a decoction mash?

I've brewed a number of all grain beers and have been reading a bit about decoction mashing. However the explanations I've read have been a bit complicated. How do I do a decoction mash?
6
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3answers
205 views

Should I boil apples before using them in a mash?

I'm thinking about bacterial/wild yeast contamination etc.... Or will just washing them under the tap be suffice? Also can I use the cores?
6
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2answers
1k views

What does a good crush look like, and does it matter if grains are overcrushed if batch sparging?

I am looking for some advice on what a good crush looks like, and whether it matters on my system. The opinions and pics online are all over the place on this. Background: I am buying small-batch all-...
6
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2answers
2k views

Are residual starches bad for the beer?

I was reading another question here and it appears that the consensus is that the iodine test isn't all that useful if your recipe is good. But, while reading through everything, I had a thought: if ...
6
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2answers
4k views

Determining the right gravity after mash in all grain brewing

Say I am brewing a beer that is supposed to have an OG of 1.050. I'm doing all-grain brewing and at the end of my mash & sparge, if I took the gravity at that point, what should I expect? I ...
6
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1answer
271 views

What is conversion?

While answering another question, about mash temperature, the question about conversion and how long it takes came up. So what is conversion? I think we all know its the process of enzymes converting ...
6
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1answer
75 views

Step mash and under modified malts

I’ve been reading about common mistakes with Belgian beers and it’s been noted that a “real” Belgian beer requires a step mash. The reason given for this is that apparently this is required for good ...
6
votes
2answers
235 views

Needs to be mashed

I recently had a debate with a brewing buddy of mine about malts that "need to be mashed". For instance victory malt is listed in Palmers "How to Brew" as being in the needs to be mashed column. I ...
6
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1answer
548 views

Does mash thickness make a difference in any calculations?

I am looking to do my first partial mash and I have been seeing instructions for using a mash thickness anywhere from 1 to 1.5 quarts of water per pound (per 450g). What does the thickness of a mash ...
6
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2answers
3k views

Using flakes in a mash

Do you just mix them with the grains or cook them first to get them gelatinized? What are the pros and cons of each method? What portion of the fermentables can be in flake form?
5
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4answers
6k views

Caramunich 1, 2, and 3 vs. Munich 1, 2, and 3

From my understanding it seems Munich is a base malt whereas Caramunich is a crystal malt, and the numbering is the amount of roasting. Is that correct? Are Caramunich and Munich interchangeable?
5
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2answers
331 views

Effect of decreasing mash temp?

Let's say I mash in at 65 C and over an hour it drops to 60 C - will this have a detrimental effect on my brew?
5
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6answers
9k views

Converting your fermentation bucket into a mash tun

Most people use coolers for mash tuns, but living in an apartment myself I can tell that having the least possible equipment is a priority. I know some people use their secondary fermenters as mash ...
5
votes
1answer
4k views

How do I fix a stuck mash?

I got my first stuck mash today. It ended up not being a huge problem since I had 10 gallons to sparge before I hit my target volume, but it kind of threw off my temperature calculations since I wasn'...
5
votes
3answers
168 views

Doing BIAB with several smaller bags instead of a big one

So I was thinking about switching from extract with grains brewing to all grain brewing using the BIAB method. I had this idea to use several of the small disposable bags I get for the grains in the ...
5
votes
1answer
320 views

Interpreting single-infusion mash instructions with two temperatures listed

I've been brewing all-grain for a while now, but I can't figure out why the recipes I read have the following. Take this example: Mash Schedule: Single Infusion, Light Body Total Grain Weight: 10.25 ...
5
votes
2answers
7k views

What are the effects of a watery mash?

What are the effects of having too much water in your mash? If it's too "soupy" or watery or whatnot.
5
votes
1answer
92 views

How does cereal mashing not produce off flavors due to above 170F boil temperatures?

I have always read that over 170F grain mashes will get a very distinct off flavors. How is it that during a cereal mash of grains (where you typically hold a mid-range temperature for a duration and ...
5
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3answers
2k views

How do you insulate a cooler based mash tun?

I have a Coleman 70 Quart Xtreme cooler that I've modified for my mash tun. I seem to be losing a lot of heat out the top. Are there any good ways to insulate it to help prevent heat loss?

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