Peel the pineapple by cutting down the outside in strips. Remove any remaining eyes, then slice the pineapple lengthwise and remove the tough central core.
Rub the pineapple with the salt and leave it to sit for a few minutes in a colander to draw out some of the juices. Rinse, then chop into small chunks and drain well on paper towels.
Mix all the ingredients together in a bowl