Prawns and langoustine must be fished out of glass jars.
In Paris, where restaurant menus boast langoustine from Madagascar and caviar from Iran, few gourmets imagine it possible to compose a meal from produce grown within 50 miles of .
Sweet, earthy langoustines are accentuated by oven-dried langoustine powder, and the scallops have a subtle froth of green-tea emulsion.