Sour yogurt

All the "natural yogurts" are without sugar.
But they do taste differently to those we've got in the 60's - some fruit at the bottom of the glass, yogurt above.

Since yogurt is a "zuur melkproduct", we get (from FrieslandCampina) a Dutch joghurt here in the supermarkets, labelled "wie früher".
(The older I get, the more a prefer vla, just saying.)