Walnut halves are the two symmetrical pieces of a walnut kernel, known for their brain-like shape with a light brown color and dark veins. They have a buttery texture and a mild, slightly sweet, and earthy flavor, making them versatile for snacks, baking, and adding to salads or savory dishes. Nutritionally, they are valued as a good source of omega-3 fatty acids, antioxidants, and other vitamins and minerals.