Boil the eggs hard for about 10 minutes. Quench, peel and let them cool down. Clean and wash the vegetables. Cut cucumber and paprika into large pieces
Wash the herbs and, except for some dill for garnishing, chop finely. Peel and finely dice the shallot. Halve the eggs and remove the egg yolk. Finely dice 2-3 egg white halves (use the rest of the egg white for other purposes)
Put 1 tablespoon lemon juice and mustard into a tall mixing bowl. Pass the egg yolk through a fine sieve. Stir until smooth. Pour the oil at room temperature, first drop by drop, then in a thin stream, stirring constantly. Stir in the soured milk briefly. Season mayonnaise to taste and cut into three
Leave 1/3 mayonnaise pure. Mix 1/3 with herbs and diced egg white. Drain the tuna. Puree with 1 tbsp lemon juice, 1 tsp capers and 2-3 tbsp of the remaining mayonnaise. Stir 1 tsp. capers and shallot into the remaining mayonnaise, season to taste. Arrange dips with vegetables. Garnish with lemon and the rest of the dill. Serve with crispy grain crisps