that's interesting then, cause last night was with a golden ale - the previous bad arse explosion nights involved a stout & irish red, both with wheat malt to add body, the golden was 2/5ths wheat - no maltodextrin (Corn syrup) anywhere near it, unless there is some in the malt extract?
My barley only brews don't seem to do it though, same boil procedure regardless of ingredients so that shouldn't be a variable.
I'd put it down to wheat
Oh, no curry or any other flatulence inspiring foods for a couple of days prior too