August sees the close of the Bluff oyster season, the end of those fresh seafood treats for another year.  There’s a limited season.  But there’s more to New Zealand oysters.  Happily, this bivalve mollusc is available fresh, from a range of other producers of Pacific oysters, through New Zealand.  Sweet, creamy, meaty, metallic and, of course, briny.  There’s a huge variety, showing the tastes of this country.  But why is the Bluff’s season so limited?