Lingonberry sauce is a traditional condiment made from lingonberries, small red berries native to northern Europe. The sauce is typically prepared by cooking the berries with sugar and sometimes water, resulting in a sweet-tart flavor that complements various dishes. Commonly served with Swedish meatballs and other savory foods, lingonberry sauce adds a burst of flavor and a vibrant color to meals. It is also enjoyed with breakfast items like pancakes or yogurt, making it a versatile addition to both savory and sweet dishes.