Frank, the mixed-culture version of Ringwood is also one of my favorite cultures. It produces beers that are much more complex than single-strain cultures. Ringwood developed its notorious reputation because people were passing around an incomplete culture in the nineties. I wound up obtaining the two major strains and a couple of mutated strains when I plated it in the fall of 1994. Like most home brewers, I did not know that Ringwood was a mixed culture until I plated it, transferred single colonies to slants, one per slant, and wound up with different results from different slants.