The Basic Rule of Slicing: Even Thickness
The goal when slicing is to keep every piece close to the same thickness; when thick and thin slices go into the same pan or oven, the thin one cooks through early while the thick one is still raw. With vegetables like potato or carrot, consistent thickness is what makes a recipe's stated cooking time actually work.
Slicing a Round Vegetable Safely
Trying to slice a round or oval vegetable like a carrot or potato straight away makes it roll on the board and the knife slip. Cut a thin slice off one side first to create a flat surface, then set the vegetable down on that flat side — it now sits still and can be sliced safely.
Practical Tip
Always flatten one side of a round vegetable before you start slicing it; this single step nearly eliminates the cuts caused by a slipping blade.
Bias Slicing
Holding the knife at an angle to the vegetable rather than straight down creates a larger surface area than a straight slice of the same thickness; this helps the vegetable cook faster and looks more appealing on the plate. This technique is common when prepping long vegetables like carrot and celery for a stir-fry.
Slicing Against the Grain of Meat
The fine lines you see on the surface of a piece of meat show the direction the muscle fibres run — this is called the grain. Slicing against the grain, at a right angle to those lines, shortens the long fibres and makes the meat easier to chew; slicing with the grain leaves the fibres long and tough.
The same steak can be easy to chew or rubbery depending only on the angle of the knife against the grain — the difference isn't in the cooking, it's in the cut.
Chiffonade: Cutting Leafy Herbs into Fine Ribbons
To cut broad-leaved herbs like basil or mint into ribbons, stack the leaves from largest to smallest and roll them tightly like a cigar. Slicing thinly across the roll opens the leaves into fine strips as you unroll them — this technique is known as a chiffonade.
Blade Angle and Slice Thickness
Holding the blade nearly vertical to the board gives thin, even slices; the more the angle tilts, the more slanted and thicker the slice becomes. The knuckles of your guiding hand set how far the blade moves back with each cut — pull them back a little for a thin slice, more for a thick one.
Slicing: Draw the Blade or Push It?
For soft, thin-skinned ingredients like tomatoes, pressing the knife down while drawing it toward you in one motion gives a cleaner slice than sawing it back and forth. A sawing motion crushes the soft flesh, while a single drawing motion cuts through the skin cleanly on first contact.
Common Slicing Mistakes
One of the most common mistakes is sawing a soft vegetable or fruit back and forth, which crushes it; a single drawing motion is usually enough. Another is trying to slice a round vegetable without flattening it first — this leads to both uneven slices and cuts caused by a slipping blade.