A person standing in a kitchen next to a cutting board on a kitchen counter demonstrates how to sharpen a knife.   A  man in a kitchen next to one tomato on a cutting board, slices the tomato piece in half and then turns to talk to the camera.   the man then picks up a plate, flips it over and begins to run the blade of the knife across the protruding edges at the bottom of the plate.   After doing this, the man then uses the knife to cut the tomato again, this time slicing neater and quicker, the man then smiles at the camera.