Where can I find Crystal salt in Wuppertal?

Crystal salt can also be found in these cities:

Cologne Erkrath Essen Hilden Langenfeld (Rheinland) Marienheide Mettmann Solingen

You can also find this in Wuppertal:

Edible Curd Grated Lemon Peel Flaxseed Bread Fruit Bar Pickled Vegetables Fresh Salt Schupfnudeln Whole Grain Rolls Mayonnaise