i'm doing a large mini-mash, if that makes any sense. adding 50% extracts (3.15# Munich LME, 3# Extra Lt. DME, 1/2# corn sugar) in addition to this grist:
1lb. dark Munich
2oz. each Aromatic and Carafa II.
my question is this- will an iodine conversion test give a "false" positive when there are specialty grains - already coverted- in the grist? My understanding is the 3# of munich malt needs to be converted. so far, at 30min into the mash started at 156F and now at 150F, an iodine test says it's converted. i'm continuing with a 60min mash, then sparge.
the mash had 1.5G water, sparged with 2.5G water @ 170F to yield 3.25G in kettle at 1028SG.
is this good? according to Palmer's efficiency calculations it's not. 28pts x 3.25G / 4.625 lbs of grain = 19. Palmer says shoot for 27-30. Below 25 is poor. We'll see how many points my OG is off.
Target OG 1069. Actual 1064. I suppose that loss was mostly from the "poor" mash?!?