adjusting (increasing) IBU's after primary ferment?

[benf]

Can someone please advise on the following?

The weekend just gone I brewed a California common style beer. Unfortunately when I put the recipe together in Brewmate I didn't realise that I had inadvertently ticked the no-chill box, so my hop additions were calculated way too low and seems that the theoretical IBU of what I made is about 19, when I was actually going for something around 30.

The batch is now almost done on primary ferment and I am about to dry hop (hence I have just realised my mistake!!). I am wondering if there is anything I can do to make an adjustment in the IBU to bump it up at this point in the game?

If it helps, hops I have used in this brew and still have available are Simcoe, Galaxy and Hallertau.

Thanks in advance for any thoughts.

 

[Kranky]

My advice is just drink it as is whenever it's ready and write it off to experience.

 

[adryargument]

Can someone please advise on the following?

Im sure you would enjoy it regardless. People put to much faith in numbers

 

[QldKev]

First taste it and see what you think. If it still needs more bitterness, you can get liquid hops/iso hops from a lot of decent homebrew places. A bottle will last a very long time.

 

[Spiesy]

Have you tasted it?

 

[benf]

tbh no have not tasted it. I was just trying to get my head around what I could possibly do when I do taste and dry hop tonight if I am not happy with it.

Sounds like putting it down to experience might be a reasonable option though. It was just meant to be an easy summer drinker, nothing too complex, so may still fit this bill. I hope so atleast as I have 60 litres of it now to drink easily. Just thought there might be a simple-ish option with the hops I have in the fridge to do something to make an adjustment.

Thanks so far for your replies.

 

[GalBrew]

What Kev said. Isomerised hop extract can be added to taste in the keg. Easy.

Probably a good idea to taste the beer first though.

 

[benf]

Just done some reading on isohop extract, my local homebrew shop sells 50ml for $6 so seems a cheap option, or better yet I can probably get some from a mate that works for Lion.

Calculations I have done would suggest that I would be adding about 0.1ml per keg to get an increase of 10 IBU, which I think is a couple of drops. Does that sound right to anyone who has used this stuff before? Not sure if I trust my shaky hands and nerves to dispense just 2 drops but will see how we go. At that dosage rate a bottle should last me, my kids and their kids to come!!

 

[toncils]

Could you stick Xg of hops into a sausepan, boil, strain and add to the fermenter/keg?