Latest from MyHotips Fresh reads while you browse
★ ★ ★ ★ ★
Be first to rate

Working from home in December means a fuller fridge, extra people in the house and lunches that still need sorting on working days. This guide covers three food swaps: plan and portion before you shop, freeze leftovers into desk lunches, and treat surplus-food bags as a top-up.

It draws on WRAP and Food Standards Agency guidance.

Quick Overview

  • Plan portions before shopping, because WRAP says potatoes top the most-wasted food list.
  • WRAP's free Food Portion Calculator is designed to help you buy and serve the right amount.
  • Cool, portion, label and date leftovers before freezing, following the Food Standards Agency timings.
  • Single-portion freezer packs double as working-day desk lunches without a fresh cook.
  • Surplus-food bags are a surprise top-up, not a replacement for the main shop.
  • Published Christmas basket totals differ by basket and method, so price your own list.

Swap 1: plan and portion before you shop

What WRAP says about waste

WRAP says UK households throw away 4.4 million tonnes of edible food a year, worth £17 billion. It puts that at about £1,000 a year on average for a family of four. These are national averages, not an amount you will save or your own rate, and your own kitchen may look very different.

The useful point for a home worker in December is quantity: WRAP says a quarter of UK household food waste comes from cooking, preparing or serving too much.

Cooking too much

With extra people around, guessing is easy to get wrong in either direction.

WRAP's free Food Portion Calculator, on the Love Food Hate Waste site, is designed to help you buy and serve the right amount. Use it before you write the list rather than after the trolley is full. This guide gives no portion sizes of its own; leave that to the calculator.

A person standing at an open kitchen cupboard holding a pen and shopping list, checking what is already in stock, in bright daylight.

Potatoes and a buy-or-skip rule

WRAP's festive campaign says potatoes top the most-wasted list, with 41% of those bought wasted in UK homes. It is a fair prompt to buy or cook a smaller amount.

Then apply one rule to every festive item before it goes in the trolley: do you have a named meal or a freezer slot for it? If you do, buy it. If you don't, buy or cook less.

Make room first: a fridge and freezer check

A check before the shop

Do this before the big shop, so leftovers have somewhere to go:

  • Note what is already in the freezer so nothing gets buried.
  • Check the fridge can take cooling leftovers.
  • Write down the working days that need lunches.
A freezer drawer half emptied on a kitchen floor, with neatly stacked tubs on the worktop above and a pen and sticky labels beside them.

Swap 2: cool, portion and freeze leftovers

Path A: fridge for a day or two

The FSA advises cooling cooked food and getting it into the fridge within one to two hours. Leftovers are then eaten within 48 hours or frozen.

That suits food you already know will be tomorrow's lunch. If you can't name the meal, move to path B instead of waiting for the 48 hours to run out. The FSA guidance is for England, Wales and Northern Ireland.

Related read: Calm Christmas Hosting Without the Stress

Path B: freezer for later

The FSA says splitting leftovers into smaller portions helps them cool quicker, and it advises labelling and dating anything you freeze. It also says it is safe to freeze food up to and including the use-by date.

Once food has defrosted, the FSA says to eat it within 24 hours and not refreeze it. Portion containers or freezer bags both work; aim for one portion per lunch.

From Boxing Day leftovers to working-day lunches

Several lidded containers of cooked leftovers, each with a handwritten date label, stacked in a freezer drawer under cool white light.

Cool, portion, date, freeze

Say Christmas dinner is finished and there is turkey, vegetables and gravy left. Following the FSA, the cooked food is cooled and into the fridge within one to two hours.

Split it into single-lunch portions, which the FSA says helps leftovers cool quicker. Label each with the date and freeze it. Each container is then a finished lunch, not a bag of mystery leftovers to sort out at noon.

On the working day

In the morning, take out one portion to defrost. The FSA says defrosted food should be eaten within 24 hours and not refrozen, so take out only the lunch you intend to eat that day.

Eat it at the desk or at the kitchen table, and keep the rest of the freezer undisturbed.

Related read: Easy High Protein Lunches for Desk Workers

Match the freezer to the week

Count the working days that need lunches and freeze to match. As a hypothetical, if you need lunches on four working days, freeze four single-lunch portions and no more. Anything beyond that needs its own named slot.

Next read: Best Meal Prep Containers for Work From Home Lunches

Swap 3: surplus-food bags as a top-up

Morrisons

Morrisons states that a Magic Bag holds £10 worth of food for £3.09 (checked on 1 November 2026). You reserve and collect it via the Too Good To Go app. Contents are a surprise, so you can't plan a specific festive meal around one.

Aldi

Aldi says its Surprise Bags promise at least £10 worth of food for £3.30, at the time of checking, 1 November 2026. Aldi also says supply is limited and varies by store, so a bag may simply not be there on the day you want one.

M&S

M&S says over 350 of its Food stores offer Too Good To Go bags of surplus bakery products, with a minimum £10.20 worth of food. Collection is Monday to Saturday, one hour before closing. It is bakery only, so it suits bread and rolls for the freezer.

When a bag is worth reserving

Reserve a bag only if you have freezer room and a plan for the contents. Treat it as a top-up, not a replacement for the Christmas shop, and don't count on festive items turning up. Prices can change, so check the retailer's own page when you reserve.

Why Christmas basket totals don't match

thinkmoney's 2025 basket

In thinkmoney's 2025 comparison of 20 Christmas dinner essentials for six to eight people, Aldi came out cheapest at £47.41 and Waitrose was £81.10, a spread of £33.69 between cheapest and dearest.

Those are 2025 figures from one basket. They show how wide a gap can be, not which shop will be cheapest this year.

NetVoucherCodes, same year

NetVoucherCodes, reported by The Money Pages, found Christmas dinner for six cost £31.73 at Aldi and £80.95 at M&S in 2025. Aldi appears in both studies at different totals, £47.41 and £31.73, because the baskets and methods differ.

So price your own list the same way at each shop you use. Prices can change.

A calmer Christmas week: a short checklist

The routine in order

Run through this in order and the three swaps fit together:

  • Plan portions and use WRAP's Food Portion Calculator.
  • Buy smaller amounts of potatoes, the item WRAP lists as most wasted.
  • Clear freezer space and gather labels.
  • Cool, portion, label and date leftovers.
  • Eat defrosted food within 24 hours and don't refreeze it.
  • Treat any surplus bag as a top-up, outside the main plan.
  • For anything wider than food, use the Christmas budget guide.
Related read: How to Save Money at Christmas
A notepad with a handwritten week plan lying on a kitchen worktop beside a laptop, with a few labelled containers in the background.

FAQ

Can I freeze Christmas leftovers?

Yes. The FSA advises splitting leftovers into smaller portions, which helps them cool quicker, then labelling and dating anything you freeze. Get cooked food into the fridge within the one to two hours the FSA gives before it goes into the freezer.

Can I freeze food up to the use-by date, and how long do defrosted leftovers keep?

The FSA says it is safe to freeze food up to and including the use-by date. Once defrosted, it says food should be eaten within 24 hours and not refrozen.

Will a surplus-food bag contain Christmas food?

Not reliably. Bag contents are a surprise, and Aldi says supply is limited and varies by store. Treat any festive item as a bonus rather than part of the plan.

Does the FSA guidance apply everywhere in the UK?

The FSA guidance used here is for England, Wales and Northern Ireland. If you live elsewhere in the UK, check the food safety guidance that applies where you live.

Verdict

Start with portions, then use the freezer to turn leftovers into working-day lunches, and treat surplus bags as an optional top-up. The biggest reservation is that bag contents and availability vary, and 2025 basket totals say nothing about 2026 prices. Next step: write down the working days that need lunches and plan the freezer shelf before you shop.

Next read: Everyday Energy for Remote Workers