A few of the Alan Pugsley-built breweries have repitched the same Ringwood culture since they opened. I am fairly certain that Shipyard and Magic Hat are members of this group. One of the beauties of Ringwood is that it is true top-cropper. All of the Pugsley-built breweries top crop from open fermentation vessels. Top cropping is the only way to go if one wants to repitch a culture indefinitely (Harveys also top crops).