I love the ring of vanadium and chromium in the morning. Knives: their sleek stainless steel lines and alloy elements—even the names rugged—are forged to razor-sharp tactile pleasure. They rank supreme among kitchen equipment.
Aesthetically pleasing, but they’re work horses too. Sure, you can cook nearly anything on a $25 single-burner college-dorm hotplate, but you need good knives to prepare food properly.
When stocking a kitchen, people tend to purchase their knives last. “They’ll spend hundreds on a stand mixer and gadgets, but if you add up the times you use a knife against those items, you would exceed their combined use,” according to Derek Marcotte, national sales manager at Wusthof-Trident Canada.
I have several Wusthof-Trident full-tang, three-rivet knives including an 8-inch chef’s knife with great balance, a 9-inch slicer, and a paring knife that’s seen the better of its 25 years, though it diligently keeps on paring.
Also gleaming on my magnetic knife bar are a couple of Zwilling J.A. Henckels blades including a terrific 8-inch serrated bread knife: it nestles soothingly in my hand as I slice heavy dark rye for early morning toast. A 6-inch boning knife breaks down a chicken easily.
Add to that an 8-inch knife made by Sanelli that’s good for rough chopping before it’s tossed in the dishwasher, assorted utility knives, and a small santoku with its “granton edge” for the lighter work of prepping veg and thin slicing.
Anatomy of a knife
It’s about finding the right tool for the job, so know what you want to do with your knives when purchasing, advises Jordan Lassaline, sous chef at Stratford’s The Old Prune restaurant and a practical cookery instructor at the Stratford Chefs School.
“Figure out what you need, and buy accordingly. Ultimately, you’re looking for something that feels good in your hand, has ample weight to it, and is comfortable.”
A brief anatomy lesson dissects the components of a knife that you should be looking for. The good ones have a single-piece blade, the “tang” of which extends from the cutting portion and runs the length of the knife.
Check the “bolster:” it runs perpendicular to the knife’s length as a thick bit of steel between handle and blade. It’s the knife’s fulcrum and provides heft and stability.
The thick top of the blade is the “spine,” but of course the business side of the knife is the cutting edge starting at the “heel” (which begins at the bolster) and running forward to the “toe” or tip of the blade. Deciding how long a blade you want is up to you, but most chef’s knives are about 8 inches though some can range to 14 inches. If you can have only one very good knife, make it the versatile chef’s knife.
A comfortable grip is crucial for safety and reducing fatigue during use. Known as “scales” and riveted to the tang, handle materials range from basic polypropylene to exotic “mpingo” (grenadilla) wood harvested from ecologically sustainable farms in Mozambique, notes Wusthof’s Marcotte.
Incidentally, you can hear the dulcet tones of mpingo at play in the woodwind section of your local orchestra—it’s used to make clarinets and oboes.
A good knife’s true temper
Both flexible and hard, the best knives are high-carbon surgical steel (often blends of vanadium, chromium, and molybdenum), which means “virgin” rather than recycled steel. “The tempering—heating and cooling—brings out the true character of a knife,” Marcotte adds.
Premium knives are forged in 1800-plus degree Celsius furnaces before being cooled to 70-degrees Celsius within minutes. Tempering alters the steel’s molecular structure and results in hardness, the degree of which is measured against something called a “Rockwell” scale. Knife steel is actually harder than railroad tracks.
Taken out of its metallurgic context and put into your kitchen knife drawer, Rockwellian hardness is a gauge of how long the edge on your knife will stay sharp—or how easily you can put on edge back on it. That’s critical for making those little radish roses or an exquisitely precise brunoise.
Blended with steel alloys, ceramic knives are popular for cooks looking for something other than steel blades, and the black hue and zany whorled pattern on Kyocera’s “Kyotop Damascus” knives is certainly sexy, for example.
Made of zirconium oxide that is “sintered” (powders compressed to form a solid) at 1000-degree Celsius temperatures, ceramic knives are light weight and stay sharper than conventional steel blades.
Marcotte says “they’re probably the sharpest on the market, but they can be unbelievably fragile. You wouldn’t want to drop one too violently. They are not for hard chopping but are brilliant for lighter knife work.”
Check the warranty
Having broached the subject of breakage, a final bit of buying advice comes from Chef Lassaline: “When looking at higher-end knives, there is a lifetime warranty you have to watch carefully. Many will say you can’t cut bones or frozen food.”
Each time you reach for a good knife, its quality rings true in your hand—like the sound of blade on honing steel.
Regular maintenance and cleaning
Under a powerful microscope, a knife’s “edge geometry” is serrations like tiny tines of a comb. When you use your knife, those tines get bent and misaligned; hence, a dull knife. But there’s a difference between honing and sharpening.
Chefs like Jordan Lassaline might be “on their steel” before each knife task, depending on how much work they’re doing. Running a honing steel across the knife before each use realigns the tines and keeps a perfect edge on the blade for many years without the need for sharpening.
“With your knife steel tip-down on a cutting board, adjust your knife to a 20-degree angle and run it firmly but lightly down the steel through from heel to toe on both sides of the blade. Repeat the action about seven times per side. The whole process should take about 15 seconds,” suggests Marcotte.
There are tools like sharpening stones and pull-through ceramic and carbide devices of all sorts. “The common factor is that they rip off the dull teeth and create a new edge. However, the more you sharpen, the more you need to sharpen because as you remove steel your edge gets wider and wider,” Marcotte says.
As for dishwashers, check with the manufacturer. Most premium knives are dishwasher safe, but both Chef Lassaline and Marcotte suggest washing by hand with a cloth and warm, soapy water.