Deba Knife is ideal for cutting through bones and toughened portions on medium sized fish, meats, poultry and vegetables.How to Sharpen:1.Sharpening on a whetstone2.Dampen whetstone.3.Sharpen on whetstone on flat surfaces onlyUsage & Care:1.Wash Knife with dishwash liquid before use.2.always dry blade thoroughly after washing.3.Do not use scrub brushes or abrasive cleansers