The process of heating the wort to 100 deg. C or higher, causing the wort to boil. Hops are most often added during the wort boil.

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663 views

Why does gravity increase between pre-boil and pitching?

My handy-dandy "Beer Craft" book has a handful of recipes with useful information, including expected targeted pre-boil gravity, original gravity, and final gravity. Their pale ale recipe, for ...
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7answers
4k views

Aluminium boil pots: Heresy or not?

Are aluminium pots acceptable as boil vessels? They're cheap, but I've heard they can produce off-flavors. Any experiences with them?
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3answers
805 views

Should I have extra wort for boil when using leaf hops?

The first time that I brewed with whole flower / leaf hops, my more-experienced homebrewing friend said that I should have more wort than usual at the start of the boil, because the dried leaves will ...
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3answers
245 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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2answers
307 views

Gravity going down during boil. How can it happen?

Can you think of any scenario (apart from errors of the measurement tools) where gravity actually goes down during boil. Normally, due to the loss of water, gravity should always go up. During our ...
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1answer
325 views

Should I extend boil times if temperature drops?

I use an electric burner when I home brew. It doesn't have a ton of excess power but it can get a nice rolling boil going. Occasionally, when I add malt extract to my kettle the temperature drops ...
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1answer
501 views

Making a starter without DME?

Planning to start to use liquid yeasts and will need to do some starters. It is hard to get hold of DME over here (I can get some hopped LME, though). I was thinking on doing a starter from grains, ...
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1answer
178 views

Boil size, ABU's and adding LME

I see version of this question has been asked, so apologies for the repeat but its never quite answered in the way I need. I made a batch last night and noticed half way through the process that ...
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1answer
169 views

Is there a distinction between flavoring (e.g. 30m) and aroma (late) hop additions

Boiling hops reduces the beta acids that are associated with aroma/flavor. Is there any other advantage to a 30 minute hop addition or could you just increase your 60 minute hop addition to achieve ...
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1answer
4k views

What is the ideal boil pH?

What is the ideal boil pH? You hear a lot about mash pH, but if you've maximized your mash efficiency and conversion what is the best pH for the kettle? Pre boil? Post boil?
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4answers
244 views

how much air would I need to move to be able to brew in my basement?

I currently brew in my garage but everything that I need is in the basement, so I was wondering if it would be reasonable to think about power venting the fumes, and therefore to CO outside to make it ...
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1answer
2k views

Screw dimensions for camco/reliance water heater element?

I'm planning to install a water heater element in my boiling kettle. I have been looking at the Reliance and Camco elements but since neither is easy to get by in Finland I really need to go for a ...
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1answer
185 views

What does it mean when a recipe calls for a boil addition of coffee in pounds, but also mentions brewing the coffee?

Context: I know that there are a bunch of different, hotly debated opinions on how/when to add coffee to beers. I'm much too new to be a loyalist, but I am confused: I'm brewing a Russian Imperial ...
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1answer
8k views

Where to buy an immersion heater?

I'm planning to make a Hot Liquor Tank with a 5 gallons cooler and an immersion heater, but I don't have idea about where and which immersion heater I need. I read a tutorial, and the guy is using a ...
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3answers
852 views

Any reason not to boil for longer?

I've been looking at ways to improve my brew efficiency, and one method that I've not seen much discussion of is increasing the boil duration. Usually when I finish lautering, the wort coming out is ...
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3answers
8k views

All grain - is full wort boil absolutely necessary?

From what I've read it seems you Have to boil the full wort amount when going all grain. I just want to make sure that is the case, as I couldn't understand why you couldn't just boil the malt etc and ...
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1answer
4k views

What is the purpose of boiling wort?

Theoretical question here. What happens when wort is boiled? Why do we do it? Why is the process not done at cooler temperatures? My limited understanding, with some assistance from this post and ...
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2answers
733 views

When to remove hops and other bittering/aroma agents?

On brew day, when is the appropriate time to remove the hops and other bittering/aroma agents from the wort? Is it at flameout, or is it once the wort has been fully cooled and is ready for the ...
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1answer
1k views

Partial vs. Full Voume Wort Boil

The starting postion for most new extract brewers is to use a partial boil set up. Defined as using a pot smaller than the intended batch size, all the ingredients are boiled in a smaller volume. ...
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2answers
280 views

Strange black pods in wort - hop seeds?

We just brewed an all grain batch yesterday. There was an ounce each of two types of whole leaf hops (from Freshhops) in the boil. After cooling the wort, we strained it through a fine mesh strainer ...
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2answers
230 views

I boiled my PVC thermometer probe - health concerns?

I have a digital thermometer with a probe. The probe is stainless steel but the cable and probe housing are apparently made of PVC. In my last brew I just submerged the whole probe in the boiler ...
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1answer
1k views

Does batch size affect evaporation rate?

If I brew a 5 gallon batch and a 15 gallon batch on the same system, would I see a different hourly evaporation rate between the two batches? For the sake of the question assume all other variables ...
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3answers
3k views

Dealing with hot and cold breaks

I'm curious to hear how folks remove the hot and cold breaks in their brewing process? With the hot break, I try to spoon out as much as I can, but this often feels like fighting the wind. When it ...
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1answer
330 views

Leaf Hops in Primary

I used leaf hops in my boil and did not filter them out when I transferred to primary. I thought it'd be like pellet hops, which settle down into the yeast cake. This is not the case, though. They ...
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1answer
2k views

Home brew, acetylaldehydes and hangovers

Both me and my gf noticed that my home brews (even just 1 or 2 a night) cause a fairly noticeable headache in the morning compared to commercial brews. God forbid you get drunk on it, the next ...
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2answers
1k views

Sanitation & Dry Hopping

Is there any risk of wort infection by not sanitizing hops before dry hopping?
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1answer
257 views

After how long of a boil will LPT1 and other head retention proteins denature?

I've read that certain proteins denatured during the wort boil is responsible for causing great, delicious foam. I don't get me no foam. I'm also doing partial boils using extract. So my question ...
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4answers
3k views

Is a long boil with extract necessary?

I'm making a late hopped extract beer later tonight. (Jamil's Evil Twin as posted http://www.mrmalty.com/late_hopping.htm) He suggests at 90 minute boil with the first hop addition coming 20 minutes ...
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3answers
6k views

Do I need to sterilize my top-off water?

I just purchased my first kit and am about to brew it (tonight!). The instructions provided indicate that after cooling the wort and tranfering it to the sanitized carboy I need to top it off with ...
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1answer
1k views

Is it possible to boil wort too quickly?

I recently picked up this burner and was excited to use it to bring my wort to a boil. I had it cranked up pretty high and it took about 15 minutes to bring 6 gallons of wort to a rolling boil in a ...
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4answers
745 views

Short boil and DMS

So I just had a small brewing mishap where I added too much hops. WAY too much. I somehow mistook my 2oz hop pellet bag for a 1oz bag and added 1.5ounces of chinook instead of .75 . This brought my ...
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5answers
2k views

Effect of boil size on IBUs

I have the following recipe on beercalculus: http://hopville.com/recipe/551364/belgian-pale-ale-recipes/wedding-belgian-ipa-2011-03-06-version beercalculus (along with most IBU calculators), ask for ...
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4answers
206 views

Long boils are ruining enamel on stove, is there any way to prevent this?

I have tried putting aluminium foil about 3 inches out from around burner, but that seemed to exacerbate the problem. I think it helped the insulate the area under the foil. It seems like I am ...
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5answers
3k views

Target boil off percentage?

I have heard a lot of home brewers talk about the vigorousness of the boil being quite important. Given that describing the vigor in words like "rolling" is ambiguous I was wondering if it makes more ...
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1answer
477 views

Is DMS content relevant when using extract?

Most extract kits suggest simply dropping the extract in the bucket with some boiling water. Do extract brewers need to be concerned about DMS levels or is that taken care of in the starch conversion ...
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2answers
434 views

Extract late with a full boil?

If you can do a full wort boil with extracts is it still beneficial to be adding extract late to avoid color changes and the like? What would happen to hop utilization with extract late in a full ...
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2answers
351 views

Cocoa Nibs for Chocolate Flavorings

What is the best way to use cocoa nibs? Do you crush them, crack them leave them whole? Steep and remove pre-boil, leave in boil, add at flameout? Add them only during secondary? How long?
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2answers
1k views

Brewing at Altitude

How does high altitude affect brewing chemistry? Up here in Denver (5280') or even higher in the mountains (some towns in Colorado are 9000' and higher), water does different things. In Denver, water ...
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13answers
2k views

Where do you brew?

This Saturday (1/2/09) will be my very first time brewing and I am considering my options as far as location. I have seen some folks boiling their wort outside on a gas grill and the smiling people ...
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3answers
319 views

Hop Utilization Resource

When substituting hops (both varieties and pellet/plug/whole)in a recipe, I would like to keep IBU as close to the recipe target as possible. However, the best utilization chart I can find is in ...
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2answers
597 views

Propane v. Natural Gas

I just moved to a home where there is natural gas being piped into the garage for a garage heater. I was thinking of re-tooling my burners with jet/orifices that can handle the lower pressure of the ...
6
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3answers
408 views

Does anybody else skim the protein off the top of their boil?

I've been doing it lately, assuming it will reduce the amount of crap I have to filter out after the boil, and it seems to reduce the amount of head I get during the boil (less chance of a boil over). ...
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3answers
1k views

Melanoidins in beer

Where do melanoidins come from in beer? What characteristics do they bring to beer?
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4answers
2k views

Filter out Hops after Boil

After the boil I have been told to run the wort through a filter before adding yeast and letting it ferment. It seems like you would get more flavor leaving the hop leftovers in. What is the ...
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3answers
3k views

What is the Maillard reaction, and why should I care what a duck thinks?

What is the Maillard Reaction? What does it do for my beer? What can I do to encourage or discourage it?
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2answers
2k views

What are some popular methods for measuring boil and HLT volume?

Particularly during lautering and during a boil, I have a hard time keeping track of water/wort volume. What method(s) and equipment do you all recommend for accurately calculating liquid volume ...
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3answers
898 views

Pennies in the Boil

I've heard that adding cleaned pennies to the wort can help prevent boil-overs. I guess they could provide nucleation points- I dunno. Any truth to this, or is it just an old wives' tail?
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6answers
13k views

Tap Water: Safe to use without boiling? [duplicate]

I made my first batch of beer over the weekend. I didn't have quite enough bottled water on hand to add to my wort to make 5 gallons, so I used tap water. I sanitized the hose sprayer on my sink by ...
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1answer
4k views

When brewing a chocolate stout, should the cacao nibs be added in the boil, the secondary, or both?

When using cacao nibs to brew a chocolate stout, should they be added in the boil (if so, when?), in the secondary fermenter, or both? Is there a better ingredient to add to produce the chocolate ...
8
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2answers
2k views

Boiling with lid on or off?

In this answer it is mentioned that boiling with the lid on or off may make a difference in final gravity. Which do you recommend and why?