
To sharpen a kitchen knife at home without an expensive system, use a ceramic mug. Flip a mug upside down and rub the knife's edge against the unglazed bottom, similar to a whetstone. This acts as a budget-friendly sharpening tool. Remember, honing and sharpening are different: honing realigns the blade's edge, while sharpening removes metal to create a new edge, so hone regularly and sharpen less frequently[4][5].
For safety, cut away from your body and keep fingers clear of the blade. To test sharpness, try slicing through a tomato or a piece of paper; if it cuts smoothly with little pressure, it's sharp enough[5].
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