It’s been a while since I made a long post on HBT…
I have been brewing all grain for about 15 years. This means 2 things - one, I am old and two, I built my brewery to be a three vessel, 2 pump, fly sparge system. I became re-engaged with the brewing community over the past couple years, and found that even people who mocked BIAB 10 years ago now love BIAB.
Personally, I love the time and equipment savings that BIAB offers, but I hated the idea of pulling the grain bag, plus I already made a large investment in equipment - with that, my 2 Vessel No Sparge system was born. I think it’s the best of both worlds. I’ll walk you though the process with a couple staged pictures.
My HLT/Boil Kettle is the vessel on the left, and my MLT is on the right.
First, the full volume of brewing water is added to the HLT. It is treated with campden tablets, brewing salts, and lactic acid. I use my propane burner to bring the water up to strike temperature. Meanwhile, I mill the grain and add it to the dry Mash Tun. When strike temp is reached, I pump from HLT to Mash Tun, under letting the grain bed. The full volume of water (30 liters) is added to the mash. My kettles are 42 quart, and I brew 5 gallon batches at moderate gravity. Capacity has not been a problem for me. The few ounces of strike water lost to dead space in the HLT can stay right where it is, and it will blend back into the batch after mash is drained. I give the mash a gentle stir, confirm I am happy with temp, cover the MLT and walk away.
After about an hour, I rearrange the two hoses to begin recirculating the mash. I tend to like my beers dried out, so I mash low(149/150), and after at least a 60 minute rest, I begin adding heat while recirculating (via gas burner beneath my MLT) to take me through the higher conversion temps. I kill the heat when mash out temp is reached. This heated recirculating step is probably 15-20 minutes. A more committed brewer could set up the MLT to provide constant temp control during the entire rest through a RIMS tube or a kettle rims (like the gas controlled brew commander), but I really just don’t care to deal with those things these days. The temperature seems to stay pretty stable in a 42 quart kettle that is covered and nearly filled to the brim.
When recirculation is complete, I connect the pump output to the inlet on my boil kettle. The full volume of wort begins to drain and pump from the mash. My bittering hop charge comes via a first wort hop addition. As soon as wort starts to flow, I add my hops and fire up the kettle.
I boil for 60 minutes. At the end of boil, I’ll kill the heat and use a spoon to create a bit of a whirlpool. This is a good time for final hop additions, whirlfloc, nutrient, etc. After about 10 minutes, I drop in my immersion chiller, start chilling, and connect the bouncer to filter out rogue hops on the way to the fermentor. When I am happy with the temp, I gravity drain to my fermentor.
That’s it!
Oh, and remember that third vessel I had…
Well, while batch 1 is in the mash tun, the strike water for batch two is being treated and brought up to temp. As soon as my mash is drained into the boil kettle, I dump the spent grain, add back the fresh dry grain for batch two, and start the process all over again with my third kettle acting as HLT/BK. It’s a very efficient way to make two (or 3) different batches of beer on brew day. There are opportunities for me to speed things up, but with zero cut corners, I can make 3 unique all grain beers (set up to cleaning and pitching) in 8 hours.
Here is a series of pictures to represent batch 2:
I hope someone finds this process interesting, and I am happy to hear any questions or comments.
Thanks for reading! |