800g sustainable cod fillets, cut into 3cm pieces
About 100g coarse salt
Splash rapeseed or olive oil
12 corn tortillas
Soured cream to serve
For the spice rub
½ tsp cayenne pepper
1 tsp smoked paprika
½ tsp garlic powder
1 tsp ground cumin
1 tsp dried oregano
3 tbsp plain flour
For the guacamole
½ red onion, finely chopped
1 red chilli, finely chopped
3 very ripe avocados
1 garlic clove, crushed
Juice 1-2 limes
Bunch fresh coriander, chopped
For the salad
200g cherry tomatoes, quartered
Large bunch each fresh flatleaf parsley, basil and mint, chopped
3 tbsp red wine vinegar
3 tbsp olive oil
1 tbsp caster sugar
2 little gem lettuces, leaves torn
½ red onion, very thinly sliced