AG#4 Folland Gnat Bitter

[JontyR]

This is an all Challanger recipe and is based on Coniston Bluebird

Folland Gnat
Date:
Gyle Number:
Fermentable Colour lb: oz Grams Ratio
Pale Malt 5 EBC 7 lbs. 14.9 oz 3600 grams 94.7%
Crystal Malt 130 EBC 0 lbs. 7.0 oz 200 grams 5.3%


Hop Variety Type Alpha Time lb: oz grams Ratio
Challenger Whole 7.6 % 60 mins 0 lbs. 1.2 oz 35 grams 70%
Challenger Whole 7.9 % 15 mins 0 lbs. 0.5 oz 15 grams 30%


Final Volume: 23 Litres
Original Gravity: 1.037
Final Gravity: 1.009
Alcohol Content: 3.6% ABV
Total Liquor: 32.1 Litres
Mash Liquor: 9.5 Litres
Mash Efficiency: 75 %
Bitterness: 36.6612479642573 EBU
Colour: 14 EBC

It's boiling away nicely at the moment.

[JontyR]

I pitched the yeast last night and it's fermenting nicely. I do have a question though if anyone could help. I ended up with 25l at 1.044 as opposed to the predicted OG of 1.037. I don't really mind as I'd rather it was over than under but I'd like to understand why, or what factors influence this.

Thanks

[WishboneBrewery]

Your Mash efficiency may be higher than that used to calculate your recipe...
I get some good Mash efficiencies but leave BeerEngine set at 80% and I'm normally near as damn it by the end of the brew

When you've collected all your wort after sparging, note how much volume you got and take a Gravity, with the BeerEngine recipe open use the Efficiency calculator with 'mash' ticked to figure out what your actual mash efficiency is (note though this can change from brew to brew / recipe to recipe / mash Temp to Mash Temp, and also differing liquor treatments)

[JontyR]

Thanks for that, I'll take a look

[Bryggmester]

Sounds good, I do like Challenger. Why Folland Gnat by the way? A blast from the past but a very graceful looking aircraft.

[JontyR]

Sounds good, I do like Challenger. Why Folland Gnat by the way? A blast from the past but a very graceful looking aircraft.

As it's based on a coniston bluebird I wanted a to keep a link to the beer, the jet engine in Donald Cambell's boat was from a Folland Gnat. Tenuous I know

[Manx Guy]

Sounds good, I do like Challenger. Why Folland Gnat by the way? A blast from the past but a very graceful looking aircraft.

As it's based on a coniston bluebird I wanted a to keep a link to the beer, the jet engine in Donald Cambell's boat was from a Folland Gnat. Tenuous I know

Sounds like another good brew! Well done on improving your efficiency!


Its not that tenuous!

Guy

[Barley Water]

In my system, I would probably get somewhere around 1.040 with the grain bill you used so your efficiency is pretty good. I would say one thing though, getting really good efficiency is over rated. What you really want is consistency from batch to batch. That way, you can plan your brews and get the hopping you want relative the the anticpated starting gravity. Also, if you get too much efficiency, you will start extracting tannins from the husks of the grain which at some point will start to effect the taste of the beer, and not in a good way.

[WishboneBrewery]

So far as I'm told at work our mashes are in the 94% mark, sparging at 76c to avoid Tannins being extracted.