We are offering walnut, specifications the nutritional value of walnuts 100 grams of walnut kernels contains: calories: 650gm fat: 64% carbohydrates: 16% protein: 14% uses: walnuts may be consumed fresh, roasted, or salted. They are used in confectioneries, pastries, and for flavouring. crop year: 2013 (current year) origin: india.