Note Rock samphire, marsh samphire and purslane are available from select greengrocers. Aptenia cordifolia is available from select nurseries. Wakame seaweed is available from select Japanese grocers and seafood shops. Warrigal greens are available from Ilovewarrigalgreens.com.au and farmers' markets. Puffed white quinoa is available from select health-food shops. Sea urchins and sea urchin roe are available from select fishmongers.
"This dish, combining many of the tastes and textures of the sea, makes a great appetiser," says George Biron. "There are many edible succulents now available at good markets. Purslane, aptenia, rock samphire, marsh samphire and seaweeds all provide great contrasts and briny flavours to complement sea urchins, the truffles of the ocean. To clean a sea urchin, remove the top circle of the shell with a pair of kitchen scissors, a bit like you would to top a boiled egg, then carefully remove the roe."