Thats my thoughts too Reg, I read a post on another forum where one of the members had emailed the brewer asking what went into Doom Bar, the brewer replied he would get back to him when he wasn't so busy and give him the ingredients. The poster went back on the forum tellimg them he was going to get the recipe for Doom Bar.
A couple of weeks later he got a reply from the brewer, malt, water, hops and yeast. I think you would have to be a Collingwood supporter if you thought you would get a truthful answer from a brewer making a popular beer.
Will be spending a lot of time at Trentham MBB so will go on the brewery tour, is it free?