How to Reduce Restaurant Food Waste

In short: food waste is money you paid for, prepared and threw away, plus the labour that went with it. The way to cut it is to measure it, find where it comes from and change the ordering, prep and menu that cause it. A simple log is enough to start.

We do not quote national waste cost figures here, because published ones use old data. Measure your own.

Waste is sometimes treated as a green issue, and it is. But for most restaurants it is first a margin issue. It raises your food cost percentage, and in a business with thin margins every saved portion goes straight to profit.

Step 1: Measure for two weeks

The UK charity WRAP, which publishes guidance on measuring and reporting food waste in hospitality and food service, advises establishing a baseline of your current waste before you decide what to change. You can do that without special tools.

Set up a waste station with:

• A scale accurate to about 50 grams.
• Labelled containers for each waste type.
• A tally sheet or tablet with date, item, weight or number of portions, reason and initials.
• A short list of reasons so people can record in seconds.

Use the same reasons everywhere:

1. Spoilage or out of date in storage.
2. Preparation trim (peels, bones, off cuts), some of which is unavoidable.
3. Over production: made but not sold.
4. Plate waste: returned or left by guests.
5. Errors and returns: a wrong or dropped dish, an order cancelled after cooking.

DineHarbor's inventory tools include waste records for stock items with a reason such as spoilage, preparation error, customer return, training, spillage or expiry. You can also use a paper sheet if that is what your team will use. What matters is that the log is filled in during the shift.

Step 2: Read the log

After two weeks, add up the weights or the cost by reason, and by item. Value matters more than weight: a kilogram of saffron and a kilogram of potatoes are very different problems. Use your recipe costs to value the waste.

Ask:

• Which five items cost the most to throw away?
• Which reason is largest?
• Which day or shift wastes the most?
• Is the waste trimming that a better method could reduce, or whole portions that should have been sold?

Step 3: Fix storage and ordering

Spoilage is usually an ordering and storage problem.

• Order from sales. Use your reports to see what really sells on each day, and order to a par level rather than by feel. See suppliers and ordering.
• First in, first out. Label deliveries with the date, put new stock behind old, and check dates at the start of each shift.
• Store correctly. The right temperature, covered, off the floor, raw below cooked. See temperature logs.
• Receive properly. Reject poor product and check quantities. See stock control.
• Keep the stock list short. Fewer ingredients that appear in several dishes mean less spoilage.

Step 4: Fix preparation and production

Over production is the waste you can control most directly.

• Prep to forecast. Write a prep sheet from expected covers, using sales for the same day in recent weeks and known events. Update it as the day develops.
• Batch small and often for items that spoil: sauces, salads, soups, bread.
• Use trim well. Bones to stock, vegetable peelings to soup bases where safe, stale bread to crumbs or puddings. Do not stretch food safety to save trim.
• Check your yield. Better knife work or better product can save more than recycling.
• Right size the portion. If guests regularly leave the side, make it smaller or optional.

The prep sheet is a short, living document. Hang it up, tick it off, and record what is left at close.

Step 5: Design the menu to waste less

• Keep a short menu that shares ingredients across dishes. See menu engineering.
• Use stars and plowhorses to plan stock; do not carry expensive ingredients for a dish that rarely sells.
• Plan specials around what needs using up, once the food is safe and within date, and cost them first.
• Offer portion choices for dishes where plate waste is high.
• Mark dishes unavailable promptly when an ingredient runs out, so the kitchen does not waste time on orders it cannot fill. Your online menu and till should agree.

Step 6: Handle surplus safely

Surplus that is safe, within date and correctly stored can sometimes go to staff meals (within your policy), to a reduced price end of day offer, or to a food redistribution charity. Food safety rules apply to every route:

• Cool and store it properly, and label it.
• Keep a record of what left and when.
• Never serve food that has already been served to a guest to another guest.
• Follow your authority's guidance on donation and labelling.

If in doubt, do not use it. The cost of a food poisoning incident is far greater than the value of the food. See the HACCP guide.

Step 7: Handle what remains

Whatever waste remains should go to the best route you have: food waste collection, composting or anaerobic digestion where available, then general waste as a last resort. Many countries have rules about commercial food waste collection and separation, and in some places it is a legal duty. Check with your local authority and your waste contractor. Used cooking oil goes to an authorised collector.

Step 8: Share the numbers

Show the team the waste figure each month, as money, and what it would buy. Thank them for improvements. Ask for ideas: the cook who proposes a smaller soup batch knows more than the manager. Keep the log going after the first success, since waste creeps back.

Waste on delivery and takeaway

Online orders bring their own waste: orders refused or lost, food that goes cold, and packaging. Track the cost of refunds and remakes. See takeaway and delivery profit and takeaway packaging. A clear online menu with accurate availability prevents many cancelled orders.

A simple monthly routine

1. Add up the waste log by reason and value.
2. Compare with last month and with sales.
3. Pick the top two items and the top reason.
4. Change one ordering rule and one prep rule.
5. Tell the team the result.

Common causes and quick fixes

Pick one cause per week. Small changes tested for a week beat a big plan that nobody follows.

What to do with the savings

Waste reduction pays for itself, but the savings disappear if nobody sees them. Write down the monthly saving and decide what it is for: a staff meal, a piece of equipment, a share to the team or a price you did not need to raise. People keep up a habit when they see what it earns.

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