Hi all -
I am relatively new to brewing with only five AG batches under my belt.
I took a crack at a pumpkin brown ale today and I was really disappointed to find out that I only got the mash to convert at ~60%. Regarding the details, I mashed at 149F for 60 minutes and 2.2 qts/lb (not the plan, but after initial infusion at 164F, I had to add more water just to reach 149; adding more hot water would have exceeded the capacity of my tun). I performed a continuous sparge at 165F, collecting about 4.5 gallons of wort (3 gallon batch).
As I am trying to figure out what I did wrong, I remember that the only other time I have had such a poor conversion was also attempting a mash at 149F (that time according to plan).
Do I have to take another step when mashing at the lower ranges to make sure that conversion is in the 75% range? I imagine PH might come up; I do not currently have a good way to measure or correct for PH.
Obviously, this batch is not going to be what I intended, but I am trying to make sure that I can have better control of my mashing in future brews.
Thanks for your suggestions.