1.Spray medium frying pan with cooking oil, cook onion and garlic over heat, stirring, 1 minute. Add zucchini and tomatoes, cook, stirring occasionally, about 10 minutes or until vegetables soften. Remove from heat, stir in mint.
2.Bring stock to the boil in small saucepan, remove from heat, stir in couscous, stand 5 minutes. Stir into zucchini mixture.
3.Meanwhile, preheat grill. Sprinkle fish with sumac, grill until cooked, turning once.
4.Serve couscous topped with fish and lemon wedges.
Use any firm fish that’s in season, it’s cheaper that way. Sumac is a type of Middle Eastern spice, now available from supermarkets. The flavour is slightly tart. If you can’t find the spice, cook the fish without it.
Note
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