crhall41 said:
My last brew (2nd time on the BM) came in at an unimpressive 65% mash efficiency. To up this efficiency I am going to try the following on my next brew:
- condition my grain bill with 2-3% water the night before.
- mill my grain with my newly purchased Monster 2 roller maltmill (thinking 1-1.2 mm)
- use BrewTarget to determine my mash tun and sparge water volumes.
- stir my mash 3-4 times during the mash cycle.
I thought I would do a report out after my 3rd brew with BM50. Before I get into the numbers here is what I did different than last time.
- used BeerToolsPro to design my recipe (nice app but not intuitive for beginners)
- conditioned my grain bill at 2% night before (really helped reduce the dust during milling
)
- milled my grist at 1.21mm (crunchy grind that produced a bit of flour - may do 1.4mm next time)
- stirred my mash before sparging (determined too much a pain to do during the mash cycle)
- did a 2 step yeast starter at 1.5L each using a stirplate (fermentation is cranking now at 12 hours)
My winter ale OG of 1.075 was a fairly high OG to shoot for given my previous poor showings but I went for it anyways. My recipe called for 7.3kg of grist for my 19L batch but using the short malt pipe could not hold that much so I decided to cut back the 2-row 33% and add DME during the boil. Good that I did this because I was at the load limit of the pipe at 5.5kg. After doing some reading on mash schedules I realized it there was a lot of different thoughts out there, but I had to make a choice so I went with 55C-10m/63C-60m/68C-20m/72C-30m/78C-10m. I went with the longer mash to get the best attenuation. Also read on some AHB post that a longer B amylase rest was good for higher OG brews so I went with it! My boil time was 90 minutes.
I am very please to say that I hit my targets pretty spot on. I hit my pre-boil, pre-DME target of 1.047, my mash efficiency was 77%, and my brewhouse efficiency was 79% (at least that is what I think the efficiency number is in BTP - it did not say in the user guide). With the added 0.5kg of amber DME this will bump me up to an OG of 1.075 and a ABV of 7.4%.
Needless to say cleanup was relatively easy with the BM. i love that there is no hoses, clamps, valves, etc to clean. I am very pleased with the results this time around. Now if I can only get my corny's to not leak
thanks again for all the great BM discussion on AHB.
cheers, Chris