Method

1. Cut fish into large even cubes, place in a bowl and toss with a little of the oil, salt and pepper. Thread the cubes onto the skewers, cover and refrigerate until ready to cook.
2. Combine mayonnaise and lime juice; you may not need all of the juice. It should taste lightly tangy. Set aside.
3. Heat a barbecue or char-grill plate. Brush the zucchini, eggplants, capsicum and onions with remaining olive oil, salt and pepper, and cook for 2-4 minutes each side, until well coloured. Remove and set aside.
4. Cook the skewers for 30-60 seconds on each side, until the flesh is opaque almost all the way to the centre. Don\u2019t cook them all the way through, as they\u2019ll continue to cook after they are removed from the heat.
5. Arrange the vegetables in the centre of each plate with the skewers on top. Drizzle with some of the lime mayonnaise, garnish with a lime cheek and pass the rest of the mayonnaise separately.
6. Notes: Sashimi-grade fish is normally sold trimmed, if it is not, trim off any skin and dark muscle and check for bones before cutting it. If you don't want to make your own mayonnaise, use one made from whole eggs. Japanese eggplants are long thin purple egg.
7. Credit: Sydney Seafood School