Heat the barbecue to hot - but not the highest level. While it is heating the various ingredients can be prepared
Grilled vegetables
Start with the vegetables as these will take the longest to cook. Cut the peppers into irregular sized pieces no bigger than 5cm any side. Slice the courgette along it's length and again about 5cm in length. Asparagus should be trimmed.
Put into a bowl and add the olive oil and mix well.
place foil or a barbecue matt on the grill and spread the vegetables over it.
Couscous
Prepare couscous with hot vegetable stock (1:1 ratio by volume), cover and let steam.
Fluff and mix in the herbs and spices if using.
Grill
Brush fish with oil to prevent sticking. Grill over medium-high heat for 2–3 minutes per side, depending on size. Handle gently — this fish is very delicate!
Optional extras
spoonful of yoghurt with garlic and lemon zest, or
A light chermoula (blend of coriander, garlic, lemon, cumin, and paprika)