A knife consists of two main parts: the blade and the handle. In a well-made knife, the metal that the blade is made of will extend all the way through the handle. Different parts of this single piece of metal serve different purposes. Here are the main features of most knives:
THE CUTTING EDGE is the sharpened, honed edge of the blade. It should be razor sharp – a well-sharpened knife will literally be able to take the hairs off your arm (don’t try it). Chef’s knife blades come in varying degrees of curvature, designed for various tasks, such as slicing or rock-chopping.
THE BACK, OR SPINE, is the long side opposite the sharp blade. This is where you hold your non-knife hand when rocking the knife back and forth for rapid mincing. It can also be used as a makeshift bench scraper for moving pieces of food around on your cutting board (you should never do this with the cutting edge – it will dull it.)
THE TIP is the sharp point at the end of the blade. It’s used primarily for precision work.
THE HEEL is at the bottom of the blade. In many Western-style knives, the metal thickens significantly at the heel. This is to make it easier to grip the knife using the blade grip.
THE BOLSTER is the part of the blade that meets the handle. It is thick and heavy, providing a good balancing point for the blade and the handle. In a well-balanced knife, the center of mass should be somewhere near the bolster, so that you can rock the knife back and forth with minimal effort.
THE TANG is the extension of the blade that runs through the handle. It provides balance as well as sturdiness. A knife with a full tang (that is, metal that extends to the butt of the handle) is unlikely to ever lose its handle.
THE HANDLE is where your whole hand rests if using the handle grip, or where your three smaller fingers rest if using the blade grip. Handles can be made of wood, polycarbonate, metal or various exotic materials.
THE BUTT is the fattened section at the very bottom of the handle.
THE TWO GRIPS
The first step to perfect knife skills is learning how to hold a knife. There are two basic grips: the handle grip and the blade grip.
THE HANDLE GRIP: With the handle grip, your hand is completely behind the heel of the knife, with all your fingers tucked behind the bolster. It is generally used by beginning cooks or cooks with exceptionally small hands. It’s comfortable but it offer only limited control when doing precision knife work.
THE BLADE GRIP: The blade grip is the preferred grip for more experienced cooks. Your thumb and forefinger should rest in front of the bolster, directly on the blade. This grip is a little intimidating, but it offers much better control and balance. It may be difficult and/or uncomfortable with cheaper stamped knives that don’t have a bolster.
What about your non-knife hand? In general, there are two positions you’ll find that hand in. The most common is known as “the claw,” and when people cut themselves with a knife, it’s most likely because they weren’t using the claw. Use this grip when dicing and slicing. Protect the fingertips of your non-knife hand by curling them inward, using your knuckles to guide your knife. When cutting food, always place it in a stable position, preferably with a cut surface flat against the cutting board. Then guide the knife blade against the food with your claw hand.
For mincing, a different approach is required. Place the tip of your knife on the cutting board and hold it in place with your free hand. Rock the blade up and down to reduce herbs (or anything else) to a fine mince.