Cod tacos with smoky coleslaw

Name: Cod tacos with smoky coleslaw
Ingredients: 1½ tbsp wholegrain mustard; 1 large or 2 small garlic cloves, crushed; 225g mayonnaise; 2½ tsp chipotle chilli paste; juice of 1 lime (around 2 tbsp), plus lime wedges to serve; 1 red onion; ½ red (or green) cabbage; 2 large carrots, peeled; ½ x 31g pack coriander, leaves only; 100g plain flour; 2 tsp mild chilli powder; 2 tsp ground cumin; 1 tbsp paprika; 3 large eggs; 125g panko breadcrumbs, or other dried breadcrumbs; 500g packs skinless and boneless cod fillet; 1 ltr vegetable oil, for frying; 12 corn tortillas