The frequency with which you need to sharpen your kitchen knives depends on how often you cook and the types of foods you prepare. For most home cooks, sharpening your knives every three to six months is a good rule of thumb, provided you perform regular maintenance.
It is important to distinguish between honing and sharpening. Honing uses a rod to realign the edge and should be done weekly. Sharpening actually removes metal to create a new edge and is necessary when honing is no longer effective. If you find that your knife is crushing onions instead of slicing them or sliding off the skin of a tomato, it is time to sharpen the blade.
Usage patterns dictate the schedule. Daily cooks may need sharpening every three to six months, while moderate users cooking a few times a week might only need it every six to twelve months. Maintaining sharp blades is vital for safety because dull knives require more force and are more likely to slip, which can cause injuries. Sharp knives cut more cleanly and work with much less effort.
