One Good Hand, Four Bad Tools
A student with one fully functional right hand is asked to prepare onion-tomato masala for 40 people in 90 minutes: 2 kg onions, 1 kg tomatoes, and 500 g coconut for chutney. The available equipment is an 18 cm carbon-steel knife whose handle rivets are loose and whose edge will not cut a tomato skin without pressure; a 2 kg granite mortar and pestle; a 750 W mixer grinder whose jar lid locking clip is cracked; a chopping board with a warped base that rocks on the steel table; and a wooden rolling pin. The student's left hand can only stabilise, not grip. He starts with the onions, pressing hard on the knife, and the board slides. The teacher is helping another group and cannot stay.
1. Rank the equipment hazards and decide what must be rejected, what can be used with an adaptation, and what can be used as it is.
Read the worked answer
Hazard ranking (highest first)
- Mixer grinder with a cracked lid locking clip. At 750 W the jar spins fast; an unsecured lid can lift, and with hot or wet coconut the contents can spray out. This is a projectile and scald hazard and cannot be managed by technique. Reject: tag it out of service.
- Knife with loose rivets and a blunt edge. Blunt edges are more dangerous than sharp ones because they need force; force plus a slipping board is the classic cut. Loose rivets mean the blade can separate from the handle mid-cut. Reject this knife; obtain a serviceable one from the store.
- Warped chopping board. Medium hazard: it rocks, so the cut moves under the hand. Usable with adaptation: place a damp cloth or non-slip mat beneath it, or clamp it to the table edge.
- Mortar and pestle. Safe but slow for 500 g coconut; suitable only for small batches or spices. Use as it is for small quantities only.
- Rolling pin. Not relevant to this task; no hazard if left aside.
Judgement: the two items rejected cannot be fixed by better technique within 90 minutes. Replacing them is faster than working around them, and continuing with either is a reportable unsafe practice.
2. Design a working method and workstation set-up that lets the student complete all three preparations safely with one gripping hand.
Read the worked answer
Set-up
- Board height 5 cm below the elbow so the shoulder is relaxed; a raised board (on a stable crate) reduces the downward force needed and improves control.
- Damp cloth under the board, plus a clamp if available.
- Keep the cut items in bowls on the right, waste bowl on the left, so the working hand never crosses the body.
Technique changes
- Onions: halve and place flat-side down for stability; use a rocking cut with the tip on the board and the handle lifted by body weight rather than hand strength. Cut into quarters first so pieces are stable.
- Left hand: use it only to press down through a folded cloth or the back of the wrist, never with fingers extended.
- Tomatoes: cut a shallow cross, blanch 30 seconds and peel; soft tomatoes need far less force than skin-on ones.
- Coconut: grate or pulse in small 100–150 g batches using short pulses, never filling the jar above half. If the only mixer is out of service, use a borrowed serviceable one or the mortar in batches - accept a slower pace rather than a damaged jar.
- Pacing: 5-minute rest every 20 minutes; fatigue is what turns a controlled cut into a slip.
Sequencing: start with onions (hardest), then tomatoes, then coconut, so the most demanding work happens while the student is freshest.
3. What should the student report, to whom, and how should the faulty items be handled before the next group arrives?
Read the worked answer
Reporting is part of the skill, not an optional extra.
- Tell the teacher immediately, before the next group starts, and state the specific defect: 'knife rivets loose, blade cannot be trusted', 'mixer jar lid clip cracked'. Specific wording gets a specific repair.
- Tag the items with a visible 'OUT OF SERVICE - DO NOT USE' label and move them away from the working area, not merely to one side of it.
- Enter the fault in the equipment register or maintenance log with date, item, fault and the name of the person reporting; this creates a traceable record and prevents the item being quietly returned to the shelf.
- Do not attempt an electrical repair. The mixer must go to a qualified technician; a taped clip is not a repair.
- Knife: a loose-riveted handle can sometimes be re-handled or re-riveted by a technician; until then it stays out of use. A blunt knife should be sharpened by someone trained to do it, since a badly sharpened edge is also dangerous.
- Board: check whether the warp can be flattened or the board replaced; a board that still rocks must not be used for cutting.
Follow-up: the teacher should check the replacement equipment before the student resumes, and the student should confirm that the replacement knife is sharp by the tomato-skin test.