TOOL GUIDE
Cooking Tool Guide
Check the features, suitable uses, selection criteria, usage, and management methods of cooking tools.
COOKING TOOL
View other cooking toolsChef knife
Kitchen knife is a basic cooking knife used for slicing, dicing, and trimming various ingredients such as vegetables, fruits, meat, and fish. Because the blade length, width, and center of gravity determine suitable tasks, it is better not to force one knife to handle all ingredients, but to use it according to the task range. Thin, sharp blades are advantageous for cleanly cutting materials that bruise easily like tomatoes and onions, while relatively wide blades provide stability when moving minced ingredients or slicing root vegetables. However, bones, frozen foods, and very hard seeds or skins may dull or bend ordinary knives, so dedicated tools may be more suitable. Good cutting feel comes not only from edge sharpness but also from a handle that fits your hand, balance on the cutting board, and correct cutting motions. If the knife does not cut well and the material slips or you need excessive force, first check blade condition and cutting technique rather than pressing harder; safety depends on these factors.
Suitable uses
- Suitable for repetitive slicing and mincing ingredients like onions, green onions, mushrooms, and leafy greens where the blade tip stays close to the cutting board and the handle moves up and down for easier handling when ingredients are gathered in one place.
- Hard vegetables like carrots, potatoes, and zucchini can be cut by pushing or pulling the entire blade forward to reduce bruising. If the knife stops in the middle of the ingredient, it is better to divide the ingredient into smaller pieces or trim the blade rather than twisting with force.
- Also usable for trimming meat, peeled fish, and fruit. However, bones in meat or fish bones may not be suitable for a thin knife, so check blade thickness and manufacturer’s intended use.
- Also useful for crushing small aromatic ingredients like garlic, ginger, and herbs. Pressing garlic with the blunt side and then mincing works with a broad, relatively sturdy blade, but very thin or hard blades should avoid impact.
Selection guide
- If you mostly trim vegetables and home ingredients, consider a blade length around 16–21 cm to allow comfortable rotation on the cutting board. If your workspace is narrow or your hands are small, an excessively long blade can be hard to control at the tip.
- A wider blade makes moving the cut ingredients easier and using the knuckles as a guide, but may feel dull for very precise peeling. If most tasks are fruit prep or small-ingredient work, pairing with a shorter utility knife is practical.
- Stainless steel blades may require less maintenance, while steel composition and heat treatment affect edge retention and sharpening. For carbon steel-like materials that are prone to rust, consider whether you have a habit of drying moisture after use.
- When gripping the handle, ensure the index finger and thumb stabilize near the base of the blade and that the blade can reach the board without bending the wrist. If the handle is slippery or the tip feels too heavy, long periods of mincing can cause fatigue and control issues.
Usage tips
- If the board shakes, place a damp cloth or non-slip pad underneath to fix it, otherwise the blade may move in an unexpected direction when cutting.
- Keep the fingers of the gripping hand curled inward so the joints guide the blade sides. If you straighten the fingers, the remaining pieces may sit near the cutting line, so leave flat pieces to cut.
- For hard vegetables, first create a stable plane before cutting. If potatoes or onions roll, cut in half or slice one side thinly so the base rests on the board, reducing the possibility of the knife slipping sideways.
- If tomato skins tear or onions crush, instead of pressing straight down, try pulling or pushing with a longer stroke. If it still won’t cut, the issue is likely edge sharpness, so consider sharpening or replacing the blade.
- When gathering minced material along the side of the blade, use the spine or the wide side rather than the sharp edge. Dragging the blade on the board dulls the tip faster, and this is more pronounced on glass or stone boards.
Management tips
- Wash with a soft sponge and neutral detergent before the food dries, then dry thoroughly for storage. Water left at the handle joint or blade root can cause stains or corrosion, so check with a towel to the crevices.
- Dishwasher compatibility depends on material and handle construction; follow the manufacturer’s guidance. High heat, strong detergents, or banging with other dishes may not be suitable for some blades or handles, so if guidance is unclear, hand washing is a safer choice.
- Store knives in a sheath, magnetic holder, or knife block so blades do not touch other metal tools. Small nicks can form if the blade ends contact other objects, and reaching into a drawer can increase the risk of cutting yourself.
- If the cutting feel has diminished, first check for bends or nicks in the blade. Some sharpening aids can help align blades, but if the metal has worn and dulled, sharpening according to the blade angle and alloy may be necessary.
- Do not leave wooden or non-stainless handles soaking in water for long periods. However, oil treatment or rust removal methods depend on handle finish and blade material, so use products that match the manufacturer’s instructions.
Common mistakes
- Pushing hard on hard ingredients with a dull knife can cause the material to split or the knife to slip sideways. If the cut surface is rough and effort is high, stop, fix the blade, or reduce the ingredient size.
- Cutting on glass, marble, or metal trays can quickly dull the blade. Hard surfaces wear the tip; switch to a wooden or plastic cutting board suitable for knife use.
- Moving ingredients by scraping with the blade edge can damage the tip and create uneven slices. Move with the side or the back of the blade, or consider using a scraper for large amounts.
- Chopping frozen foods or bones with a regular knife can chip or break the tip. If you feel a hard resistance, do not apply more force; thaw or use a task-specific knife or tool.
- Rinsed knives left in a wet sink or water can lead to hidden cuts and water stains. Dry thoroughly after washing and store in the designated place; do not blindly feel for the blade direction in the sink.