Where can I find Acid preserves in Grabs?

Acid preserves can also be found in these cities:

Altach Appenzell Buchs Feldkirch Göfis Götzis Hohenems Koblach Laterns Mels Mäder Oberriet Schnifis Sulz Walenstadt Weiler Übersaxen

You can also find this in Grabs:

Seafood Mixed Rolls Baking Soda Rusk Food For Allergy Sufferers Potato Dishes Fitness Drinks Espresso Ground Pastries Nuts