Start by opening the desired number of oysters per person, place them on a tray and set aside in a cool place, covered with a large clean cloth.
In a bowl, mix the honey vinegar, finely chopped shallot and orange and lemon zest (adjust to taste).
Let stand until ready to serve and enjoy.
Notes
I count 3 oysters per person as a starter or aperitif because we like to offer several small dishes but if you are a gourmand, don't hesitate to count more per person.