Step 1

For tomato salsa, combine ingredients in a bowl, season to taste and set aside.

Step 2

For guacamole, coarsely mash ingredients in a bowl with a fork, season to taste, set aside.

Step 3

Meanwhile, fire up the barbecue or a char-grill pan over high heat. Season fish to taste, drizzle with olive oil and a little lemon juice, then grill, turning once, until just cooked (8-10 minutes).

Step 4

Meanwhile, quickly toast tortillas on the barbecue, turning once, until warmed slightly (1-2 minutes). Top with grilled fish, red cabbage, guacamole, a squeeze of mayo and tomato salsa to finish, then wrap them up and eat them straight away.