With over two months since the last brew, and the pressure of the imminent wedding brews, a brew day was well overdue. With Trenchfoot occupied with the ministry of the Word, I was going to be going solo, and do so properly (and importantly in these days of recession, more economically) by doing so full mash.
While Graham Wheeler was helpful (particularly in making some adaptions to my mash tun), a day as big as today had to be done under the consultation of the guru. He had some wise words, particularly concerning mash ratios, sparging and water treatment (sadly in the rush, I forgot about the water treatment).
I was very concerned, as my mash tun doesn’t have the level of insulation of most ‘cool box’ set ups, and thought that over 90 minutes, there was likely to be a considerable drop in temperature. The Guru had advised using a blanket, but I couldn’t see that being enough. Wheeler also prefers the set up using a brew bucket and a manifold, and recommends cutting up a polystyrene roll mat.
During this week’s liquid lunch, Trenchfoot had mentioned he had a couple of roll mats in the attic. So I disturbed his sermon prep to try and acquire one of these. Sadly he was unwilling to sacrifice the luxury of future camping trips, so I had to fork out the dosh.
Sensing I couldn’t take too much advice in this uncharted territory, I gave the Rotter a call… still worried about my mash tun, and specifics of water treatment. His approach to brewing seems to be less meticulous than the Guru’s. However, he provided me with some potentially life-saving advice. Apparently, using the propane boiler, even in a well-ventilated room, may lead to carbon monoxide poisining and / or explosions. I decided to move the boiler outside.
In spite of my fears, the mash tun managed to keep its heat almost perfectly. Following a chat with the Rotter, I made the last minute decision to switch from batch sparging (running all the wort out, then filling it up with hot (c.77 degrees) water, and draining it again) to fly sparging, keeping the mash topped up by gently pouring hot water at the same rate at the sweet liquour comes off. I wasn’t quite sure about how much liquor to run off… I thought I’d read somewhere about it being a bad idea to run off wort that is no longer sweet, so I stopped when my hydrometer reading came out at 1.000. I’ll have to make sure I read up before my next brew.
I had to adapt my recipe (Wheeler’s cloan of Deuchars IPA), switching East Kent Goldings in place of Fuggles as the bittering hops… decided to just finish the pack, and it turned out far more than I expected, and then my flavouring hops (Styrian Goldings). Oh balls… I’ve just realised I forgot my Irish Moss too. I should have dedicated less time to rugby watching, and more to brewing.
Unsure as to how efficient my mash had been, I decided to dilute my wort to reach the target original gravity stated in Wheeler. Sadly, it turned out that my brew was closer to 18 litres than 25. D’oh. Considering this, I poured every drop of my wort into the carboy, even the last half litre which was full of sediment (I’m now beginning to regret this, considering there was potentially a reasonable amount of calcium bicarbonate in it).
A pleasing day, and one in which I think I’ve made enough mistakes to realise there’s plenty of room for improvement for the big upcoming brews.