Savoureux Pro Line &Acirc;&reg; Knife Sharpener This Savoureux Pro Line  Knife Sharpener is astounding. My knives are now all frighteningly sharp - sharper than they have ever been. Following the instructions exactly, I was able to return a perfect edge to my Wusthof Classics within one or two runs through the procedure (sandwich, paring, chefs, and large and small Santoku) - all within minutes of opening the box. In conclude, this Savoureux Pro Line Knife Sharpener is so great I hadn't realized just how dull they had become until I see what they can do now. The chef's knife will literally slice a ripe tomato by resting the knife on top of it with no added pressure.