Boil the eggs hard for about 10 minutes. Quench, peel and let cool
Mix yoghurt and salad cream. Peel garlic and press it into the yoghurt sauce, season. Wash and chop the herbs. Peel onion. Chop a quarter finely, cut the rest into large cubes. Mix vinegar, mustard, salt, pepper, sugar and oil. Fold in chopped onion, possibly mustard seeds and herbs
Drain the corn. Wash tomatoes, quarter them. Clean, wash and chop the lettuce. Mix prepared ingredients, onion cubes and olives
Drain the tuna and cut it into pieces. Cut the ham into strips. Dice eggs. Serve all ingredients and sauces separately with the salad