½ ripe avocado, finely diced
small handful dill, roughly chopped
1 garlic clove, crushed
2 tsp garlic granules
1 lime, zest and juice
2 tsp freshly ground pepper
1 small red onion, very thinly sliced
175g/6oz plain flour
4 preserved lemons, deseeded and very finely chopped
sea salt and freshly ground black pepper
1 heaped tbsp rose harissa
1 tsp honey
2 tsp nigella seeds
1 tbsp olive oil
1 tbsp rice vinegar
1 tsp sugar
5cm/2in piece fresh turmeric, peeled and finely grated
30g/1oz unsalted butter
100ml/3½fl oz semi-skimmed milk
2 tbsp Greek-style yoghurt
280g/10oz Greek-style yoghurt
300g/10½oz sustainable cod loin, cut into 2.5cm/1in chunks
1 heaped tsp of pul biber chilli flakes (Aleppo pepper), plus extra for garnish