Boil the potatoes for about 20 minutes. Boil eggs hard. Quench both, peel and let them cool down. Cook peas in boiling salted water for about 3 minutes. Drain
Cut the potatoes into slices. Peel and chop the onions. Boil up with 1/8 l water, stock and vinegar. Mix with the potatoes. Leave to stand for about 1 hour
Drain pineapple and celery separately, collect the pineapple juice. Clean, wash and chop the salad. Cut ham into strips. Coarsely grate cheese. Cut eggs into slices. Mix salad cream, yoghurt, lemon juice and 5-6 tbsp. pineapple juice until smooth. Season to taste. Layer the prepared ingredients with the sauce alternately. Cover and let stand for at least 4 hours.