Chappo: I'm saving you until the end. Read my note to crundle first though
Benny: Thanks for the pics Benny. The pot does look small in the photo! BTW, instead of using the kid's hand puppets, you can get industrial rubber gloves from any hardware
.
On top of your brew stand (did Chappo weld that up for you?) what are you using? The bottom bit of yours looks similiar to what I use which is some fire-rated stuff about 20mm thick. It has served me well for a few years now but started cracking a few months ago and has now fallen apart
. I need a replacement.
crundle: It might take a few batches to get your figures right for doubles. I measured my last few doubles pretty carefully and found no difference in efficiency between those and my singles. I also used to spend ages trying to calculate the "exact" correction of hops to throw in for a double batch. Now I just double the recipe and this works very well. Different software can give you all sorts of different answers and these are not necessarily correct as butters referred to above.
One thing I found very interesting was a talk from the head brewer at Little Creatures. Really nice bloke who talked to us about hops. He's a pretty humble but very enthusiastic guy and works a fair bit on inutition when he is brewing something like Little Creatures Pale Ale. Why? Because he has to.
He explained that much of the hop science we have is very contradicitory and all of us had to agree with the science he pulled up. He uses the science as a base but continually assesses the end result of each batch using his mouth. Once again because he has to.
The availability and specs of the various hops he uses in LCPA are far from consistent. One batch might have a single flavour or aroma hop addition being made up of 20%/80% combination of 2 varieties of hops, a few months later it could well be something like a 30/30/30 combination of 3 varieties. From memory, their hops are stored at lagering temps, not freezer temps like we store ours so age adjustments have to be done as well.
So, onto Chappo....
Chappo: Having your own BIAB set-up to do small batches is a great idea but I don't think it is a great idea if your goal is to see if upping grain used in a recipe from 20% to 21% makes a magical difference. It won't of course. Same as if you add 23 grams of bittering hops instead of 22 grams at even 15% AA on a single batch. It won't make a magical difference and in a blind tasting, you'd be lucky if 1 in 50 people could pick it.
Little Creatures is a small brewery. Our set-ups are miniscule breweries. LC know that every LCPA they produce is a unique brew. In most areas (apart from the ability to freeze hops) they are way ahead of us miniscule brewers in the control area yet they accept this variance and make quite bold changes from batch to batch depending on what ingredients they have available at the time. (For example, using Galaxy instead of Amarillo.)
If LC can make major changes to a beer recipe then we miniscule brewers should have the confidence to do likewise.
What is their secret? Just a robust recipe. In fact, NRB's All Amarillo American Ale recipe is a slightly smoother version of LCPA and you can throw the hops around in that every which way and still get a brilliant yet distinctive beer.
What I am trying to say Chappo (and I know you love my long posts - lol) is that a pilot system should be used to test out brand new recipes that you have been unable to taste first-hand. If they taste great on your pilot, they will taste great on the Sherman.
If you get to taste a beer first-hand that is brilliant and trust the original brewer to give you an accurate ball-park recipe, then you should be able to brew double-batches of that beer straight away.
If it doesn't taste as great as you remember, then the recipe is not robust.
Gotta go now. Was just on the phone to Katie and I can't remember if she asked me where I was sleeping tomorrow night or if I wanted to sleep with her? Suppose I'll find out tomorrow. Lucky LloydieP doesn't read this thread
.
Pat