W stands for whole, indicating that the cashew kernels are intact and not broken. 400 signifies the approximate count of cashew kernels per pound. Therefore, in this case, W400 suggests that there are approximately 400 whole cashew kernels in one pound. Typically, a higher number in the grading, such as W400, indicates smaller-sized cashews compared to lower count grades like W180 or W240. Higher counts mean more nuts per pound, signifying smaller individual nuts in that particular grade. Cashew nuts graded as W400 might be smaller in size but still retain the same nutritional value and characteristics as other grades. Theyre suitable for various culinary uses, including snacking, baking, cooking, and as toppings in dishes, providing the same creamy texture and nutty flavor associated with cashew nuts.