I have soaped with beer for several years with no problem. I made a batch today and i noticed the cover on the loaf mold was raised very shortly after poring. I looked and the top of soap was crack as if over heated. i prep beer by boiling and cooling then freezing in ice trays. I have never had a problem. Could I have not boiled all the alcohol from the beer prior to soaping? Same recipe, same beer , same molds same technique.