<human>:  How do I sharpen a kitchen knife?
<bot>: To sharpen a kitchen knife, you'll need a sharpening stone. Begin by lubricating the stone with oil or water. Place the blade at a low angle to the stone, about 10 to 15 degrees, and draw it across the stone in a sweeping motion away from you. Repeat this motion 5-10 times on each side of the blade. To test the sharpness of your blade, try cutting a sheet of paper. If the blade isn't quite sharp enough, repeat the sharpening process.