Kitchen operations · Design & flow
Slow service is nearly always geography, not effort. How to audit your flow with a stopwatch, build stations around dishes, and why extraction and gas fix the plan before you draw it.
First principles
Strip away the equipment catalogues and every fast commercial kitchen is built on one idea: linear flow. Goods arrive, get stored, get prepped, get cooked, get plated, go out - and nothing doubles back. Every time a chef walks against that current, the kitchen pays twice: once in the seconds of the walk, and again in the collision risk and cross-contamination controls the backtrack creates. When service times drift, the instinct is to blame speed of hands. It is nearly always geography.
The audit is simple and free. Pick your three best-selling dishes and physically walk each one from fridge door to pass, counting steps and turns. Multiply by a Friday night's volume. A dish that takes 40 unnecessary steps and sells 60 covers costs you 2,400 steps of chef time in one service - a mile and a half of walking that produces nothing. Fixing it might mean moving a fridge, re-homing a station's mise, or swapping two pieces of equipment. It rarely means buying anything.
Stations & distances
A workflow that cuts service times groups tasks by dish family, not by appliance type. If your top ten sellers are assembled grill-fryer-garnish, those three touch points belong within two steps of each other with shared reach-in refrigeration between them - even if the equipment schematic looks tidier with all the refrigeration on one wall. The test for any station is whether one chef can work a full order from it without leaving: protein, accompaniment, garnish, plates, all within arm's reach.
Distances have a hierarchy. The prep-to-cookline journey happens dozens of times a service and deserves the shortest route in the building. The cookline-to-pass journey happens on every single ticket and should be measured in steps you can count on one hand. Goods-in to dry store happens twice a day and can afford to be the long walk. Kitchens get slow when that hierarchy is inverted - a beautiful central store nobody passes, and a pass twelve steps from the fryers.
Then plan the human traffic. Two chefs cannot occupy the same metre of line, so aisle widths, corner clearances and a house rule for who steps back all belong in the design. The classic failure is the pinch point: a single 900mm gap between the pass and the cookline that every server, chef and KP must share. One pinch point can quietly cap the output of an otherwise excellent kitchen.
The services layer
Here is the constraint many workflow redesigns discover too late: the heaviest cooking has to happen under the canopy. UK kitchen ventilation is designed to the BESA specification DW172, which expects the extract canopy to overhang the appliance line - guidance works to at least 300mm beyond the cooking equipment - and to be matched to the heat and effluent load of what sits beneath it. Gas appliances add a second lock: under BS 6173, the gas supply is interlocked with the ventilation, so if the extract is not running, the cookline is not cooking. In practice that means your fryers, ranges and chargrills are not free-floating pieces on the plan - they live inside a fixed extraction footprint, and the workflow has to be designed around that footprint rather than fighting it.
The same layer quietly governs speed day to day. An extract system loaded with grease can lose a large slice of its design airflow - industry measurements put it at 30 to 50 per cent - and the symptoms read like a slow kitchen: heat hanging over the line, smoke drifting to the pass, chefs stepping away from stations to breathe. Chefs work measurably slower at 35°C than at 26°C, and no amount of workflow redesign compensates for a line nobody can stand on. If the kitchen feels hotter than it used to at the same volume, check how often the extraction system is actually being cleaned before redrawing the floor plan.
A workflow change without a stopwatch is a rumour. Baseline your ticket times for a normal week - time from ticket in to plate at the pass, by dish - then make one change at a time and re-measure. Kitchens that do this find the wins are lumpy: one moved fridge saves 90 seconds a ticket on a top seller, while a much grander reshuffle saves nothing. The stopwatch tells you which is which, and it turns workflow from opinion into arithmetic that pays for itself every service.
Questions
Shortening the cookline-to-pass and prep-to-cookline journeys for your best-selling dishes. Walk your top three sellers from fridge to pass, count the steps and turns, and remove the backtracking. It is nearly always a bigger win than new equipment.
No. The heavy cooking has to sit under an extract canopy designed to DW172 - with the canopy overhanging the appliances - and gas appliances must be interlocked with the ventilation under BS 6173. The extraction footprint fixes where the cookline can live, so plan the workflow around it from the start.
A grease-loaded system can lose 30 to 50 per cent of its airflow, which puts heat and smoke back over the line and slows every chef on it. If the kitchen runs hotter than it used to at the same covers, the extract is usually the first thing to check.
Phoenix Duct Clean · by the numbers
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