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Questions tagged [boil]

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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Is there a benefit to a full 60 (plus) minute boil, as opposed to shorter boil/more hops?

The idea is pretty simple: bittering due to alpha acid isomerization is a function of boil time and quantity of bittering hops. Hence, it's quoted that from an alpha acid standpoint, a 15 minute boil ...
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No Starting Hops - Do I need a 60 min boil?

I'm planning to brew a New England IPA where I only use knocked hops and dry hopping. Is there any point in boiling for an hour? What is the minimum time I should boil for? I'm thinking maybe 15 ...
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200 views

What are the effects of adding water after the boil?

During the boil a lot of water is evaporated off. I have a 30L boiler and generally end up with around 22L in the fermentation vessel. After racking off from the fermentation and leaving the trub ...
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2answers
111 views

Confused about what partial boil means

I'm relatively new to homebrewing. I've just done my 5th batch a few days ago. I came across the term partial boil when watching a homebrew video on kettles. I'm not quite sure if what I do is ...
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What size of batches can I produce with a 12L pot(biab)?

I'm thinking about moving from extract with grains brewing to all grain brewing, instead of buying a bigger pot I'm thinking about using the same one I used for extract and downsize my butch (which ...
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319 views

Can you increase the pH for the boil after kettle souring?

This question's answer led me to http://www.milkthefunk.com which is a great source of information. Since there's a few methods for making sour beer, I should mention I've been doing what some call ...
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151 views

Preboil volume doesn't fit my pot

I did my last batch of extract lately and aiming to make all grain from now on. Since my biggest stainless cauldron has 12 or 13 liters capacity, I realised that my 5 gallon carboy wasn't fit for my ...
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56 views

Slight difference pre and post boil gravity

Long story short. Trying to understand my new set up, I made a mistake, I didn't check the post boil volume and also didn't have good rolling boil. The wort was boiling, but not so much. Simple grain ...
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37 views

Pre-boil volume when doing a separate boil-down

As per this recipe for a Belgian Dark Strong Ale, I'm brewing a beer where it's suggested you take a portion of the pre-boil wort, and boil it down separately to create a syrup to add back to the main ...
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62 views

How much do melanoidins increase gravity?

I recently made an all-grain Russian Imperial Stout on a stovetop, and because of some volume miscalculations (or something), I boiled for 135 minutes to get down to my desired volume of 2.5 gallons. ...
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150 views

How fast does boiling water de-oxygenate?

Conventional wisdom states that dissolved oxygen is driven out of wort when it is boiled. I can certainly understand that after 60-90 minutes of boiling the oxygen would be all gone. What about when ...
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recipe confusing — boil only some of the wort?

I have a recipe for a 1-gallon, all-grain rye ale that calls to: 1. Mash in with 1 gallon of water (1.3qts/lb) 2. Rest 152F for 60 minutes 3. Sparge with 1.5 gal water at 167F 4. Collect 2 gal wort ...
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113 views

Cannot avoid boil-over without turning down heat

I've been all grain brewing for a couple years (23 batches), and can't figure out why my last two brews simply would not get through the hot break stage of the boil. Every time I tried to get through ...
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4answers
134 views

First brew - OK to substitute malt/hops, and how much water should I be boiling?

I've been reading John Palmer's How to Brew and I'm getting ready for my first brew day in a few days. I'm aiming to follow the basic 'Cincinnati Pale Ale' recipe that he provides but I'm going to ...
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1answer
141 views

How is fermentation affected by a long boil?

When making our seasonal beer we ended up getting a pre-boil gravity sample that was way higher than expected, so we added water to dilute the mash. A new sample was taken and the first one must have ...
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111 views

Why is lemon zest undetectable in my beer?

I brewed a saison and added lemon zest for the last five minutes of the boil. At the time, it seemed like a lot of lemon zest, but I was following a recipe. The beer was in primary for a week, ...
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225 views

Higher boil off than usual?

I did a brew at the weekend with my usual kit (electric boiler). Everything was identical, apart from the location (a shop) and the water (I usually use filtered water from a Brita tap, but this time ...
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1answer
144 views

Are plastic mash paddles safe for stirring boiling wort?

I bought this plastic mash paddle for stirring my boiling wort, but now that I'm actually about to use it...I'm wondering if these types of paddles are only safe for things like steeping temperatures. ...
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383 views

How to keep extract from caramelizing during the boil?

I'm brand new to brewing and am trying to make sense of the instructions from my extract kit (Brewer's Best Amber Ale). During the instructions for the boil, they say that it's important to make sure ...
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1answer
54 views

Added my Malt syrup and brought to a boil BEFORE my grain

So I was starting a new batch and completely distracted over bills etc and realized once my malt was boiling that I COMPLETELY forgot to add and steep my grain. I added them for about 10 minutes after ...
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1answer
122 views

Is there a temperature my boil should not exceed?

I'm new to brewing (as in, tomorrow is my first brew day, ever) and I'm using a Brewer's Best Amber Ale extract kit. The directions are very thorough and precise (at least for a newbie's standards) ...
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5answers
118 views

Hop boiling - Ok to use sub section of wort?

When doing the post mash hop boil during a brew, is it possible to do this with a 5L sub-sample of the wort, instead of the full 23L of wort? In practise it would mean taking 5L from the post mash ...
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101 views

How do I predict vaporisation during the boil?

I am trying to predict the litres/hour vaporised during the boil, so I can adjust the amount of sparging water accordingly. Is there an easy way of doing this a priori by utilising other known ...
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395 views

Why are hops added at different times during boiling?

I crafted an Oatmeal Stout (using a Brooklyn Brew Shop kit) last weekend and the recipe instructions were to add 2/3 of the Golding Hops pack at the beginning of the boiling and the remaining 1/3 15 ...
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516 views

What are good cooling times for immersion wort chiller?

As far as I know, DMS is only created above 60°C, so fast cooling after boil is important. My times for 26 liters boil, with homemade immersion chiller (8mm copper pipe) are: 7 minutes to 55°C (20 ...
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513 views

Do you need to boil un-hopped extract?

I'm doing an Epic Pale Ale clone with this partial grain kit. The kit includes two un-hopped liquid malt extract cans. Sterilisation aside, I want some clarification as to whether you should boil un-...
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805 views

My cooled wort got contaminated by tap water. What are the primary consequences of re-boiling?

One of the hose clamps for the cooling spiral malfunctioned, so my cooled wort got contaminated by roughly 10 liters of tap water (in a 55 L batch). This is a lager beer which will be stored for five ...
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2answers
105 views

Is DMS created every time you heat wort?

I've had a few experiences that lead me to suspect this. A few times I've stored a small portion of wort for priming with gyle, and each time I re-boiled the wort for a short period, 10 minutes or so, ...
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3answers
289 views

Keeping the grain … While boiling. Is that bad?

I was wondering something. When I brew beer, I mash my grain for an hour or so at 60-70oC. I then separate the wort from the grain. Then I add hop into the boiling wort for 90 minutes. My friend told ...
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1answer
55 views

Need some carification on my ingredient choices and hop boil timing

Want to make a simple high gravity single hop ipa. Will this recipe work? 10 pounds DME Amber 1 pound Crystal 40l steeped 45 mins 1 oz Citra hops start 60 mins 1 oz Citra hops 45 mins 1 oz Citra ...
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1answer
191 views

How to increase gravity / decrease amount of water in my wort, and extract the same amount of sugars?

I have this problem: I'm regularly achieving 90% efficiency with my mash and sparge, and I like this effect. But I usually end up with about 30 ~ 35 liters when I aim for 20 ~ 22 liters. Boil to ...
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725 views

pre-boil water the day before?

I live in an area with hard water and I usually treat my water with a campden tablet. It's usually fine but I'd like to try something different. Can I boil my water the night before brew day and leave ...
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297 views

My propane burner is hard to ignite, and when it does, the flames are small

I have a Bayou Classic KAB4 propane burner, which I've had intermittent success using to bring my wort to a boil. When I hook it up to a full tank it seems to work fine, but when I use a tank that is ...
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How can i stop losing so much water during brew

I am brewing with a 25l HLT, 30l Mash tun and 52l boiler. I am boiling 20l to 25l water in the HLT and losing some water during the Mash and Sparge. By the end of the sparge I am getting about 15l ...
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80 views

Which kind of hop should be used on a First Wort Hopped (FWH) beer?

Should I use Aroma or Bittering hop on my FWH? The time between the FWH and the boiling should be taken into account or it does not matter?
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325 views

Should My Boil Volume Include The Volume of Dry Malt Extract?

I was just experimenting with the 'Brew It!' tool on Brewers' Friend and the instructions say that for a 12 litre boil, I should add 8.8 litres to the kettle along with 5kg of dry malt extract which ...
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Can I still reach my desired IBU level if I split my boil?

In my recipe I have a boil size of 10L. Can this be split into 2 x 5L pots whereby half the ingredients would be used in each, but still reach the desired IBUs of a single 10L boil? Fingers crossed, ...
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560 views

How do I set up a Sestos D1S temperature controller with an NTC temperature sensor probe -40-120C

I have not succed to configurated my SESTOS digital PID with an temperature sensor probe working between -40°C to + 120°C. I put CtrL to 3 ( PID ) SN to 20 ( cu50 matching my sensor ) and Op1 to 2 ( ...
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807 views

Boil options with a small pot

I'm about to make my first brew (from an extract kit), it's a 25litre batch (6.5us gal). Following John Palmer's advice I will be doing a partial boil. But the biggest pot I have available is 6litres (...
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87 views

Effect on a low gravity boil size on IBUs in the final batch

This question is a follow-up to the original one regarding the effect on boil size on IBUs. (Effect of boil size on IBUs) I understand that the boil gravity tends to lessen the utilisation of hops and ...
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365 views

Gunk in bottom of all grain boil

After finishing the boil and chilling the wort for my all grain batches I find I always have a large volume of gunk left of the bottom of the pot. I'm sure it's just spent hops and other solid bits ...
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2answers
129 views

On using a stainless steel tea bag to hold the hops while boiling

We are going to brew a Maibock next weekend and would like to substitute the whirlpool with a a metallic tea bag that holds the hops (pellets) while boiling. We tried a smaller metallic tea bag with ...
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4answers
2k views

Which is worse: a weak boil or boiling with a lid partially on?

I finished Papazian's book The Complete Joy of Homebrewing last weekend and learned that a vigorous boil is necessary to isomerize the alpha and beta acids in hops which makes these bittering acids ...
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1answer
1k views

Would insulation on a kettle help a boil at all if the lid was off?

I bought an 1800 watt induction cooktop and 2 1000 watt bucket heaters that unfortunately were not able to boil 6.5 gallons of H2O in 90 minutes, although it appeared to get close and perhaps 0.5-1.0 ...
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1answer
107 views

Is there any electrical work required for using a pre-assembled heating element?

Do I simply plug a pre-assembled heating element, like this one from the Electric Brewery, into a 120v outlet (given I have no 240v outlet) and then unplug it after the boil is complete? I am reading ...
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357 views

Camping stove as a wort heater

I'm looking for a way to get a good rolling boil on 5 gallons of wort, on a really tight budget What are my best options?
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2answers
1k views

Evaporation rate

Right now, when brewing, I have one step that is never the same : the boil. Actually, the boil phase is going alright, my problem is with the evaporation rate of my wort. I have a few questions... ...
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1answer
107 views

Testing bitterness during boil

Will be modifying a recipe and while I know the alpha % of the bittering hops and this being the first time I'm altering a recipe I'm wondering during the boiling process have I added enough bittering ...
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4k views

Specialty Grains, To boil or not to boil

I've been doing a lot of reading on brewing in preparation for my second batch. The first mention of using specialty grains that I found suggested boiling them in the brew water for a full hour. I ...
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1answer
44 views

Oil before hops

So I recently got a propane burner to brew outside (it's way too hot to be brewing inside), and I noticed something weird. As the wort came to a boil, it seemed like there was some oil floating on top....