Protein does foam. Agitation helps. Another thread seems to have pegged it as blow-off and how to deal with it - put a hose on the airlock for more release/overflow. Now I'd like to know what causes it.
No starch conversion test. I was out of iodine and so was the home brew store. The foam returned today. The mash is normal viscosity but the foam is real glue-like.
I am experimenting with unmalted wheat with an eye to high gravity lambic style beer. Just to see what would happen, I put 4.75 kg/ 10.5 lbs of unbleached all purpose wheat flour in 23L/6.25 gallons of water with a ph of 5.8-6 ish. I brought the wash to 72 C / 161F, added 1 1/2 tspn of...