How do I properly sharpen a kitchen knife at home?

The most effective home method is using a whetstone. Start with a coarser grit (around 1000) if the knife is dull, then finish with a finer grit (3000-6000) to polish the edge. Hold the knife at a consistent 15-20 degree angle against the stone and push the blade forward while moving it across the stone, as if slicing a thin layer off the surface. Do equal strokes on both sides. If a whetstone feels too involved, a pull-through sharpener or honing rod works for quick maintenance. A honing rod doesn't actually sharpen but realigns the edge and should be used regularly between sharpenings. Always finish by wiping the blade clean and testing on paper or a tomato.