AT A GLANCE
2 ruby grapefruit segments, finely chopped
2 tbsp finely chopped golden shallot
½ tsp Champagne or white wine vinegar
1 tsp olive oil
4 Sydney rock oysters, shucked
To serve: rock salt
||Combine grapefruit, shallot, vinegar and olive oil, spoon over oysters and serve immediately on rock salt.