Using a delivery app's search function is the fastest way to check local inventory.

(Polish). These are the Eastern European equivalents to quark and behave identically in recipes. 3. Online & Grocery Delivery

Wunder European Style Strawberry Quark 5.3 oz CUP\TUB. Order at your convenience via Instacart from your favorite stores near you. Go to product viewer dialog for this item. Appel Farms Low Fat Quark (Blue Label) 454g

If standard grocers fail you, local ethnic markets are the most reliable physical sources.