After an hour the first mash is completed and the wort is transferred from the mash tun to the temporary holding tank and SG noted using a refractometer.
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Half the quantity of hot water is then transferred to the mash tun using the sparge thingy and then circulated through the HERMS circuit for about 30 minutes. The wort SG is measured and then transferred to the holding tank after which the remaining hot water is transferred to the mash tun for the third and final 30 minute mash. At the end of the third mash the SG is measured and the last wort transferred to the holding tank. This is where the net bag comes in handy as it can be used to squeeze out as much wort as possible from the grain.
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The wort is then transferred back to the kettle for the boil. Salt and Epsom salts are added to the wort that is heated to come to the boil. I want this beer not to be too bitter so I added the hops after 30 minutes of the boil.
15grms Northern Brewer
I use leaf in a net bag together with a couple of stainless steel balls to help it sink. A small float is attached to the hop bag so it can be easily removed for a squeeze at the end of the one hour boil.
15 minutes before the end of the boil a protofloc tablet is added and whirlpool pump turned ON.
Flame out, hops squeezed and out. Water connected to the chiller coil. In the warmer months I use 2 chillers. One to chill the mains water by immersing the coil in a bucket of water and ice and the second the coil in the kettle to cool the boiled wort. While the wort is cooling the yeast (Lallemand English Style Ale yeast London) is re-hydrated as per the instructions on the packet.
40 minutes later wort temperature is 20 degrees C and is transferred to the now sanitised fermentation vessel, previously used as the temporary holding tank. SG measured using a hydrometer (1.054 - oops, a bit high! I think I over did the pale malt) and the yeast is pitched. FV lid on and my “adapted” airlock fitted. Had to make the “S” bend for the trap as there’s not enough headspace in my fermentation fridge.
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The wort can be “wheeled” down the garden path to the shed where the (now raised) fridge is.
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The following morning it’s going like the clappers!
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Be back in 10 days or so.....