To reduce food waste, start with three things: measure what you throw away, buy based on actual sales and use every ingredient in more than one dish. If you do not know what is being lost, when it is being lost and why, you will keep trying to fix the problem blindly.
In a restaurant, waste is not only the food left on the customer’s plate. It is the vegetables that wilted, the sauces that expired, the portions that came out larger than they should have, the wrong orders, the overproduction before a quiet evening. Below you will find practical steps you can apply straight away in your kitchen, storage area and menu.
1. Record what you throw away for 7 days
Before you change suppliers, recipes or menus, do a simple record for one week. You do not need a complicated system. A sheet of paper next to the bin or a shared file for the team is enough.
Split waste into categories:
- Preparation: peelings, incorrect cuts, burnt or spoiled ingredients.
- Storage: products that expired or spoiled before they were used.
- Production: food that was cooked but not sold.
- Customer plate: food that comes back half-eaten.
Note the ingredient, quantity, reason and shift. For example: “rice, about 1 kg, left over from lunch, Tuesday lunchtime”. After 7 days you will see patterns. Perhaps you always throw away salads on Monday or always potato garnish in the evening. That is where the solution begins.
2. Buy based on sales, not instinct
A lot of waste starts with the order to the supplier. If you buy “to be covered”, you often fill fridges with products that do not have time to move. Instead, create a simple purchasing plan based on recent sales and seasonality.
Practical steps:
- Keep a list of your 10 most sensitive ingredients, such as fresh herbs, fish, dairy products and pre-cut salads.
- Connect each ingredient with the dishes that use it.
- Before ordering, check what is already in storage and in the fridge.
- Set a minimum and maximum stock level for each key ingredient.
Hypothetical example: if you usually sell 20 rocket salads in two days, do not buy enough for 50 because “it might get busy”. Smaller, more frequent orders for perishable products are better, where this is practical with your suppliers.
3. Organise storage with the FIFO rule
The FIFO rule means “first in, first out”: what came in first is used first. It sounds obvious, but in a busy kitchen it is easy for new products to be placed at the front and older ones to be forgotten at the back.
Make your storage clearer:
- Put the delivery date on every package that is opened.
- Place older products at the front and newer ones at the back.
- Use transparent containers where possible, with a contents label.
- Keep a separate “use today” spot for ingredients that need to be used immediately.
Also, appoint someone on each shift to do a quick fridge check. It does not need to be a one-hour stocktake. 5 minutes before prep is enough for the kitchen to decide what should go into a soup of the day, garnish, staff meal or dish offer.
4. Design a menu that uses shared ingredients
A large menu with many unique ingredients increases the risk of waste. If a product is used in only one dish that does not sell often, it is likely to be left over. The solution is not necessarily to make the menu extremely small, but to make it “smarter”.
Look at each ingredient and ask:
- How many dishes is it used in?
- Can it go into a starter, main and salad?
- Can it be turned into a sauce, garnish or topping?
- Is there a way to use it if it is not sold on the same day?
For example, roasted vegetables can go into a salad, a sandwich, pasta or be served as a side. A basic minced meat mix can support burgers, meatballs or a sauce, if the recipe allows it. The more safe uses an ingredient has, the lower the chance it will be thrown away.
5. Check portions and plate returns
If many plates come back with the same leftovers, you probably have a portion or dish composition issue. It does not mean you need to make everything smaller. It means you need to observe what customers leave and why.
Ask service staff to note simple observations for one week:
- Which garnish is often left?
- Which dish comes back half-eaten?
- Do customers often ask for a takeaway box?
- Are there complaints that the portion is too large or heavy?
You may discover that the main protein is eaten, but the garnish is left. Then you might reduce the garnish and offer an extra option for a charge or a replacement. Hypothetical example: instead of a fixed large amount of potatoes on every dish, you give a smaller base and the option for extra salad, rice or potatoes depending on preference.
6. Prepare in stages, not everything early
Excessive prep is a hidden source of waste. You understand the need: when it is busy, you want the kitchen to be ready. But not all ingredients need to be fully cut, cooked or set up from the start of the day.
Split prep into three levels:
- Basic prep: things that will definitely be needed, such as stocks, basic sauces and washed vegetables.
- Partial prep: ingredients that can be finished quickly if there is demand.
- Final production: anything that should be done close to the order for quality and less waste.
Put checkpoints into the shift. For example, at 14:00 and 19:00 the kitchen manager looks at sales and decides whether production should continue. This way you do not cook a second batch because “that is what we always do”, but because there is a real need.
7. Use online orders for better control
Online orders can help reduce waste when they give you a clear picture of what customers want and allow you to quickly adjust the available menu. If a dish has run out, it is better to hide it immediately than to accept an order that will then need to be changed or rejected.
In your own ordering system, as described in the guide Online ordering system for restaurants, you can present your menu with options and better manage what is available for delivery or collection. In practice, this helps you to:
- temporarily remove dishes that have run out,
- promote dishes with ingredients that need to be used,
- reduce mistakes from phone orders,
- see more clearly which dishes move often.
The important thing is that the menu is updated by the team in time, not at the end of the shift.
8. Train the team with simple rules
Waste is not reduced only through owner decisions. It drops when the whole team knows what to do day to day. Chefs, assistants, service staff and delivery drivers influence the result through small actions.
Create 5 simple rules and stick them up in the kitchen:
- We do not open a new package before checking the old one.
- Anything that is opened gets a date label.
- Anything close to spoiling is reported to the person in charge before being thrown away.
- Portions go out with a specific tool or weighing where needed.
- Plates that come back half-eaten are noted, not ignored.
Hold a short 10-minute meeting every week. Show what was thrown away most and ask the team what can change. Often, the person who cuts, cooks or serves every day has the most practical solution. When the team takes part, the rules are applied more easily.