The method
- Place the sugar, lime juice and vinegar into a small pan and heat gently to dissolve the sugar.
- Remove from the heat, add the chilli, onion and a couple of roughly chopped tarragon sprigs.
- Leave to cool.
- Lay the oysters onto a metal steamer and place into a large pan, covered with boiling water.
- Steam for 8-10 minutes over a medium heat until the oysters start to open.
- Using a cloth to protect your hands, ease the shells open.
- Take a knife and loosen the flesh from the shell, leaving the oyster meat in the deeper half of each shell.
- Discard the upper shell.
- Add any cooking liquor to the tarragon sauce, then spoon over the oysters.
- Garnish with the remaining tarragon and serve immediately.
