A classic Australian dish which will be found in many Australian restaurants, and which is a brilliant way to enjoy oysters. I checked out a few sources before posting this recipe, for the 2005 Zaar World Tour, but primarily Huey (Australian chef Iain Hewitson) and the Australian publication by Reader's Digest of a book jam-packed with traditional Australian recipes: 'Family Recipe Scrapbook: tried and trusted recipes for today's cooks'. The recipe I've posted here is taken primarily from the Reader's Digest publication, but I've included details of a variation (from Huey) in the notes. By the way, if you're watching your salt intake and you're concerned about the unspecified amount of rock salt, don't be: you won't be eating it! Not in this recipe! But DO buy your oysters from someone or somewhere you can trust, so that you KNOW they are fresh.