Walnut kernels are graded by color, not size — and a single shade of difference can shift wholesale price by 30%. For bakers, snack brands and food manufacturers, understanding the color grading system is the first step in writing a sensible spec.
The Four Tiers
Extra Light (浅琥珀色)
Pale, almost cream-yellow. ~5-8% of harvest. Used in premium bakery, candy decoration, gift packs. Highest price tier.
Light (淡色)
Pale tan to light golden. ~20-30% of harvest. The most common export grade — used in standard bakery, retail snack packs, in-pack toppings. High price tier.
Light Amber (琥珀色)
Medium amber. ~30-40% of harvest. Used in industrial baking, energy bars, breakfast cereals, trail mixes. Mid tier.
Amber (深色)
Dark amber to brown. ~25-35% of harvest. Used in walnut oil pressing, walnut paste/butter, walnut milk, sauce manufacturing. Lowest tier.
Where Color Comes From
Color comes from the inner pellicle (thin skin around the kernel) and is influenced by variety, growing conditions, harvest timing, drying method and storage. Light kernels typically come from younger trees, careful harvest timing, and gentle drying.
Format Combinations
Within each color grade, kernels are sold as Halves (premium, intact), Quarters/Pieces (mid-tier), and Smalls/Crumbs (industrial). A typical export spec: “Light Color Walnut Halves, ≤5% moisture, oil ≥60%, vacuum packed in 25 kg cartons.”