Hard boil the eggs. Mix the mayonnaise with a little mustard and a hard-boiled egg yolk to a cream. Add the yoghurt and a little vinegar and season with salt, pepper, sugar and plenty of curry. Mix in the chives rolls.
Quarter or eighth of the boiled eggs, depending on their size, and add to the yogurt mayonnaise with the pineapple pieces and the mushroom heads that may have been split. Let it steep for a good 30 minutes and, if necessary, add some seasoning and sprinkle with chives.