Check your avocado is ripe before starting this recipe (see Cooking tip). Thinly slice the cabbage with a sharp knife or mandoline. Thinly slice the spring onion. Crush or finely chop 1 garlic clove. Put the garlic, prawns and 1 tbs vegetable oil in a bowl, season with salt and pepper and toss to combine.
Step 2 — Make slaw
Combine 2 tbs mayonnaise and 2 tsp red wine vinegar in a large bowl and season with salt and pepper. Add the cabbage and half the spring onion and toss to combine.
Step 3 — Cook prawns
Heat a medium frypan over high heat until hot. Cook the prawns, stirring, for 2-3 mins until just cooked through. Add the peri peri sauce and cook, stirring, for 1 min or until the sauce is warmed through and the prawns are coated. Remove the pan from the heat.
Step 4 — Warm tortillas
Put the tortillas on a plate, slightly overlapping, and microwave for 30 secs or until warmed through (see Kitchen hack).
Step 5 — Serve up
Slice the avocado. Divide the tortillas among plates. Fill with the slaw, prawns and avocado, scatter over the remaining spring onion and enjoy!
Step 6 — Kitchen hack
If you don't have a microwave, heat a large frypan over medium-high heat. Warm the tortillas, in batches, for 30 secs each side or until warmed through.