Brewing today....

Bigster · Post by **Bigster** » Thu Jun 28, 2007 10:03 pm

Good stuff JP - glad it went well.

Intriqued to find out what happened last week - will have a search

J_P · Post by **J_P** » Thu Jun 28, 2007 10:06 pm

Bigster wrote:Good stuff JP - glad it went well.

Intriqued to find out what happened last week - will have a search

It was an utter nightmare I can tell you!

Post by **Andy** » Thu Jun 28, 2007 10:10 pm

I take it you had to top up with water then after the boil ?

J_P · Post by **J_P** » Thu Jun 28, 2007 10:23 pm

Is there a rabbit off with my sums or something?

I measured out the post boil wort out exactly and I took a gravity reading that I assumed was correct and then corrected it to 20C using the calculator linked from Daabs site. I boil with the lid almost fully on to keep evaporation to a minimum.

What have I done wrong

Wez · Post by **Wez** » Thu Jun 28, 2007 10:50 pm

J_P wrote:Is there a rabbit off with my sums or something?

I measured out the post boil wort out exactly and I took a gravity reading that I assumed was correct and then corrected it to 20C using the calculator linked from Daabs site. I boil with the lid almost fully on to keep evaporation to a minimum.

What have I done wrong

Not sure about the calcs but i'm pretty sure that boiling with the lid on won't let the nasties out, they could just condense on the lid and drip back in.

Just my 2p.

J_P · Post by **J_P** » Thu Jun 28, 2007 10:57 pm

Wez wrote:
J_P wrote:Is there a rabbit off with my sums or something?

I measured out the post boil wort out exactly and I took a gravity reading that I assumed was correct and then corrected it to 20C using the calculator linked from Daabs site. I boil with the lid almost fully on to keep evaporation to a minimum.

What have I done wrong
Not sure about the calcs but i'm pretty sure that boiling with the lid on won't let the nasties out, they could just condense on the lid and drip back in.

Just my 2p.

Anything that could survive 90 mins of boiling steam is welcome to a pop at my wort! If you're referring to nasties in the water then it's worth remembering that only pure water evaporates everything else remains in soution

Post by **Andy** » Thu Jun 28, 2007 10:58 pm

J_P wrote:What have I done wrong

Your post-boil gravity is lower than the pre-boil gravity.

i.e. you took 33L of wort at 1048, boiled it down to 25 L at 1046 - a lower gravity then before the boil.

Does not compute.

Garth · Post by **Garth** » Thu Jun 28, 2007 11:00 pm

he's meaning the nasties that get driven off from the hops, undesirable tastes, etc, I did my first AG with the lid on, not good, and funnily it was John at H&G who told me to do this, just keep a slight bit open with a peg or something,

J_P · Post by **J_P** » Thu Jun 28, 2007 11:08 pm

Andy wrote:
J_P wrote:What have I done wrong
Your post-boil gravity is lower than the pre-boil gravity.

i.e. you took 33L of wort at 1048, boiled it down to 25 L at 1046 - a lower gravity then before the boil.

Does not compute.

Fair point - I'm not sure the 33l was actually 33l if you know what I mean, still the proof of the pudding will be in the drinking!

J_P · Post by **J_P** » Thu Jun 28, 2007 11:09 pm

Garth wrote:he's meaning the nasties that get driven off from the hops

What sort of nasties?

Wez · Post by **Wez** » Thu Jun 28, 2007 11:09 pm

J_P wrote:
Wez wrote:
J_P wrote:Is there a rabbit off with my sums or something?

I measured out the post boil wort out exactly and I took a gravity reading that I assumed was correct and then corrected it to 20C using the calculator linked from Daabs site. I boil with the lid almost fully on to keep evaporation to a minimum.

What have I done wrong
Not sure about the calcs but i'm pretty sure that boiling with the lid on won't let the nasties out, they could just condense on the lid and drip back in.

Just my 2p.
Anything that could survive 90 mins of boiling steam is welcome to a pop at my wort! If you're referring to nasties in the water then it's worth remembering that only pure water evaporates everything else remains in soution

I think that it's supposed to be the off flavours that you could get from the hop boil, i am no expert JP but others here may be able to help, I asked the question during my first mini mash here and got a certain "no" and was told to not have a lid on during the boil, not sure about a half on half off approach, personally I just boil with no lid and top up the volume with boiled treated water and it tastes great so i'm sticking with that

Edit : http://jimsbeerkit.co.uk/forum/viewtopi ... 32&start=0 (halfway down)

J_P · Post by **J_P** » Thu Jun 28, 2007 11:32 pm

F*ck! - Ah well at least I've only ruined 160 pints - not like it's the end of the world or anything, where's the "F" it I'm hanging up my boiler smiley?

If anyone wants me I'll be at the bottom of a bottle of TTL

SteveD · Post by **SteveD** » Fri Jun 29, 2007 12:50 am

J_P wrote:F*ck! - Ah well at least I've only ruined 160 pints - not like it's the end of the world or anything, where's the "F" it I'm hanging up my boiler smiley?

If anyone wants me I'll be at the bottom of a bottle of TTL

It ain't over till it's over...reserve judgement until you've tasted it. You might get away with it.

delboy · Post by **delboy** » Fri Jun 29, 2007 1:13 am

Apparently the hot wort gives off DMS (dimethyl sulphide), not boiling with the lid off results in this dripping back into the wort.
Haven't any experience of it but its supposed to give off flavours of a kind of butteryness or butterscotch flavour (which might actually be nice

in some dark beers).
Unfortunately some people describe it as cooked cabbage which i can't imagine working in any style.
Im inclined to agree with SteveD and be optomistic, reserve judgement until you've tasted it.

Wez · Post by **Wez** » Fri Jun 29, 2007 7:25 am

I'm sure you would have picked it up in your samples already if it were going to be a problem, i'm sure it'll be fine! Think Positive!

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