@fourfarthing,
Are you sure it’s an infection? Mine tastes fine. Actually, really enjoyable. I do have a lot of foaming. I poured a couple inches into a glass and it foamed up about 3 inches but when it settle down I drank it. What was left in the bottle did not foam up. The next pour did the same thing; a little beer and lots of foam. Could this be something to do with nucleation sites? Maybe from the ground spices? I don’t taste an infection.
Maybe. I haven’t used spices much. If it is fine, by all means enjoy it. I just always worry about an infection.