hey all,
i'd like to add a late hop addition to a lager that's still in the brewbox @ 13deg C.
trouble is the Pellet Bag has been in the fridge , opened for quite awhile and i'm a bit concerned about infection.
my thoughts are to boil the hops in a tbsp of DME and 250ml of water for 10min. cool and add to brew.
see any probs ?
beers4years
yardy
late hopping
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Dogger Dan
- Posts: 3168
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- Location: Lucan, Ontario, Canada
Actually the higher the SG the less hop effect you get. Thats why you need more hops if doing a partial mash or boil
I have never heard that a little is needed though but that doesn't mean anything. If it works for you do it.
Dogger
I have never heard that a little is needed though but that doesn't mean anything. If it works for you do it.
Dogger
"Listening to someone who brews their own beer is like listening to a religous fanatic talk about the day he saw the light" Ross Murray, Montreal Gazette
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Oliver
- Administrator
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- Location: West Melbourne, Victoria, Australia
I've certainly heard that malt assists in the extraction of hop oils.
I think I have observed before that if this is the case then there must be a "sweet spot" before which more malt will assist with the extraction of oils, and after which it will inhibit the extraction of oils.
Food for thought.
Oliver
I think I have observed before that if this is the case then there must be a "sweet spot" before which more malt will assist with the extraction of oils, and after which it will inhibit the extraction of oils.
Food for thought.
Oliver
Hops are chockers full of acids. oils and such.
If you are looking to bitter your beer, the primary purpose of hops then you have the normally badly soluble in water alpha acids into more soluble in water and you do this by isomerisation which can be achieved by boiling the crap out of the wort with the hops added.
Oliver and Dan are the right track though.
When you buy hops they have an AAU rating, this is the percent of Alpha Acids in the pellets/flowers, if you were to steep them in lighter fluid you might get some pretty good extraction but we normally boli them in wort so the "utilisation" is about max 25%.
The major factor in utilisation is the amount of time in the boil, though after 60 minutes the utilisation falls very rapidly..it is very complex and we actually have three models, Raeger, Tinseth and some else. I personally prefer Tinseth as he incorporates the gravity of the wort, that is that hiher gravity = less utilisation.
Oh as to the oils in hops..these are highly volatile and will be driven off very quickly, thus the concept of aroma hopping at flame out ..
Kurtz
If you are looking to bitter your beer, the primary purpose of hops then you have the normally badly soluble in water alpha acids into more soluble in water and you do this by isomerisation which can be achieved by boiling the crap out of the wort with the hops added.
Oliver and Dan are the right track though.
When you buy hops they have an AAU rating, this is the percent of Alpha Acids in the pellets/flowers, if you were to steep them in lighter fluid you might get some pretty good extraction but we normally boli them in wort so the "utilisation" is about max 25%.
The major factor in utilisation is the amount of time in the boil, though after 60 minutes the utilisation falls very rapidly..it is very complex and we actually have three models, Raeger, Tinseth and some else. I personally prefer Tinseth as he incorporates the gravity of the wort, that is that hiher gravity = less utilisation.
Oh as to the oils in hops..these are highly volatile and will be driven off very quickly, thus the concept of aroma hopping at flame out ..
Kurtz
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Dogger Dan
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- Joined: Thursday Aug 26, 2004 10:43 am
- Location: Lucan, Ontario, Canada
In order to extract the alpha acid, which gives you the bitterness you need to boil the wort, rolling boil that is. Additionally, the higher the SG of the wort the less efficient the acid extraction which means you need more hop. After 60 min, there is nothing left to give and it is my understanding that you start to get some bad flavours from the beta acids to.
The aromatics, which is what you smell, are volatile and will come off very quickly in the boil (thats why they smell so good). This why we talk about dry hopping etc, to contain that aroma.
Dogger
The aromatics, which is what you smell, are volatile and will come off very quickly in the boil (thats why they smell so good). This why we talk about dry hopping etc, to contain that aroma.
Dogger
"Listening to someone who brews their own beer is like listening to a religous fanatic talk about the day he saw the light" Ross Murray, Montreal Gazette
an interesting spin there dogger jan..pardon me if I randomly or otherwise in the future cut and paste your mails, it is not with a heart of gladness that I suffer fools but there certainly are times that I have to giggle through my glass (darkly).kurtz wrote:
then you have the normally badly soluble in water alpha acids into more soluble in water and Oliver and Dan are the right track though.
Kurtz
pardon ?
Perhaps this is what I said:
Do you have a problem with isomerisation dogger jan?, or is that dogger dale.normally badly soluble in water alpha acids into more soluble in water and you do this by isomerisation which can be achieved by boiling the crap out of the wort with the hops added.
Oliver and Dan are the right track though.
Kurtz
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undercover1
- Posts: 462
- Joined: Friday Jun 03, 2005 10:28 am
- Location: Melbourne
This sort of petty, bitchy-boy bullshit is best kept for PMs, not the forums.
DD, give a new member a break, would you?
And kurtz, get off your soapobx & get the plum out of your mouth when you are posting.
As I said earlier, you two need to get together and share your knowledge, not be bitch slapping all over the shop.
DD, give a new member a break, would you?
And kurtz, get off your soapobx & get the plum out of your mouth when you are posting.
As I said earlier, you two need to get together and share your knowledge, not be bitch slapping all over the shop.
Salut!
undercover said
under cover said
Kurtz Slivovitch
after my reponse to dogger dan editing my mail and reposting it as a quote..perhaps I made a wrong call, perhaps it is pretty much accepted on this forum that editing someones post to make it look ridiculous and then replying "pardon" is good form, I shall have to revisit my editing skills then perhaps, or perhaps not...kurtz, get off your soapobx & get the plum out of your mouth when you are posting.
under cover said
Said it all undercover.....This sort of petty, bitchy-boy bullshit is best kept for PMs, not the forums.
Kurtz Slivovitch
revisit it again k.
btw, i think you over reacted a bit.
ok... so i'm no Ernest Hemingway myself, but you have to admit your post was slightly confusing, not in content, but in the way it was worded.
no offence intended, a lighthearted jab at another member only.
if you feel i owe you an apology, fair enough.
you might want to send DD a PM though.
yardy
btw, i think you over reacted a bit.
ok... so i'm no Ernest Hemingway myself, but you have to admit your post was slightly confusing, not in content, but in the way it was worded.
no offence intended, a lighthearted jab at another member only.
if you feel i owe you an apology, fair enough.
you might want to send DD a PM though.
yardy
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Dogger Dan
- Posts: 3168
- Joined: Thursday Aug 26, 2004 10:43 am
- Location: Lucan, Ontario, Canada
Sorry,
I never really meant to slag anyone. I really thought the thread was unclear as did someone else and I tried to help, guess we stopped doing that, must have missed that post.
Nevertheless, if I put someones nose out of joint for that really, I am truely sorry because that was never my intention there at all, but get over it.
Honestly, if I put up something unclear I would certainly hope someone would try and clear it up for me as has happened a few times. So if I need to appologize please accept them.
In future I will not interfere unless I feel the information is wrong and being presented incorrectly.
And Kurtz, I never edited your post and I certainly never put it in as a quote. If you take a look, I have never quoted a thing in any post I have ever made, I don't know how.
Dogger
I never really meant to slag anyone. I really thought the thread was unclear as did someone else and I tried to help, guess we stopped doing that, must have missed that post.
Nevertheless, if I put someones nose out of joint for that really, I am truely sorry because that was never my intention there at all, but get over it.
Honestly, if I put up something unclear I would certainly hope someone would try and clear it up for me as has happened a few times. So if I need to appologize please accept them.
In future I will not interfere unless I feel the information is wrong and being presented incorrectly.
And Kurtz, I never edited your post and I certainly never put it in as a quote. If you take a look, I have never quoted a thing in any post I have ever made, I don't know how.
Dogger
"Listening to someone who brews their own beer is like listening to a religous fanatic talk about the day he saw the light" Ross Murray, Montreal Gazette