Black Autumn truffles / truffle pieces for dog training – NOT human consumption. They may be small, holey or offcuts with a total minimum weight of 20 grams. In the season, c. September – c. February, they will generally be be supplied as fresh truffles. On occasions in the season, and out of season, they will be supplied from frozen stock and will be defrosted when they reach you. Whether supplied fresh or frozen they should be refrigerated when not being used (see “Caring for your dog training truffles” tab). They are however, a very useful truffle dog training aid.