Wipe the aubergines (eggplant) clean with a damp cloth and trim off the stem ends. Cut into thin slices, crossways or lengthways, depending on shape of the aubergines (eggplant). Sprinkle with salt and leave to drain in a colander for at least 30 minutes, to allow the salt to draw out the bitter juices.
Heat the oil in a deep-fat fryer to 375°F/190°C. At this t