• Serves 8 people

  • 48 Cloudy Bay diamond shell clams, or other small-sized clams
  • 24 Cloudy Bay tuatua clams, or other clams
  • 40 mussels, scrubbed and beards removed
  • 16 uncooked medium tiger prawns
  • 3 lemons, thinly sliced
  • 8 thyme sprigs
  • Potato aïoli
  • 150 gm sebago potato, diced
  • 2 egg yolks
  • 10 gm garlic, finely grated on a microplane
  • 250 ml (1 cup) grapeseed oil
  • 125 ml (½ cup) extra-virgin olive oil
  • To taste: lemon juice
  • Marie Rose sauce
  • 200 gm good-quality mayonnaise
  • 50 gm tomato sauce or ketchup
  • 1 tbsp Worcestershire sauce
  • 10 ml brandy (optional)
  • To taste: few drops Tabasco sauce
  • To taste: lemon juice
  • Drawn butter
  • 200 gm unsalted butter, coarsely chopped
  • ¼ cup finely chopped flat-leaf parsley
  • 2 tbsp lemon juice
  • 1 garlic clove, finely chopped
01   For potato aïoli, place potato in a saucepan, cover generously with cold water, bring to the boil over medium-high heat and cook until tender (8-10 minutes). Drain well, pass through a ricer or coarse sieve and keep hot. Whisk yolks and garlic in a separate bowl to combine, then mix in hot potato. Whisking continuously, gradually add combined oils until thick and emulsified, thinning with a little hot water if mixture gets too thick. Season to taste with lemon juice, sea salt and freshly ground black pepper and refrigerate until required.
02   For Marie Rose sauce, combine ingredients in a bowl, season to taste with lemon juice, sea salt and freshly ground black pepper and refrigerate until required.
03   Build a fire in a kettle barbecue using fire lighters and hardwood logs or charcoal. Once fire has burnt down to hot charcoal, place sea stones in hot coals and leave for an hour to get very hot (add more wood or charcoal if necessary).
04   Meanwhile, cut eight 40cm squares of muslin and place on a work surface. Divide clams, mussels, prawns, lemon and thyme sprigs evenly among muslin squares, season to taste and tie into pouches, securing with kitchen string (ensure string isn’t plastic-coated or it will melt). Refrigerate until required.
05   When rocks are red-hot, place some wet seaweed over, then arrange pouches on top. Cover with a potato sack or pillowcase soaked in beer or water. Close lid and cook until clams open and prawns are cooked (35-40 minutes).
06   Meanwhile, for drawn butter, cook butter in a saucepan over medium-high heat until milk solids separate and are slightly caramelised on bottom of pan, creating a slight nutty flavour (6-7 minutes). Strain into a heatproof bowl, add remaining ingredients, season to taste and keep warm.
07   Serve seafood pouches hot with scissors for cutting them open, and potato aïoli, Marie Rose sauce and drawn butter.
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