Understanding Food Miles and Seasonal Choices

What Do We Mean by Food Miles?

Food miles are the distance your dinner has travelled between the field and your fork. A punnet of strawberries flown in from another continent might have covered thousands of miles, while a bunch of kale from a farm down the road may have journeyed just a handful. It is a simple idea, and a useful starting point, but it is not the whole story. Even a short journey in a refrigerated lorry carries emissions, and a crop grown under heated glass in the UK during winter can be more carbon-hungry than one grown in natural sunshine abroad and shipped here.

So rather than obsessing over a single number on a label, it helps to think about the whole journey: how the food was grown, how it was stored, how it was transported, and how much of it ends up in the bin. Food miles are a helpful guide, not a final verdict.

Why the Way Food Travels Matters

Not all transport is created equal. A tonne of produce moved by ship produces a small fraction of the emissions of the same tonne moved by air. This is why the most carbon-heavy foods are often the delicate ones that must arrive quickly — out-of-season asparagus, fresh berries, green beans and mangetout that have been flown in to sit on supermarket shelves in February.

Sea freight is far more efficient, but the picture doesn't end at the port. Once food lands in the UK, it is typically moved by road, kept chilled in warehouses, and packaged for display. Each of those steps adds to the total. Then there is the question of waste: roughly a third of the food produced globally is never eaten, and every wasted item carries all the emissions of growing, packing and transporting it for nothing.

The good news is that these are precisely the areas where small household choices add up quickly.

The Seasonal Advantage

Eating with the British seasons is one of the simplest ways to reduce the impact of your shopping. When produce is in season here, it can usually be grown outdoors in natural light and warmth, harvested when it is properly ripe, and sold within days rather than weeks. That means less artificial heating, less cold storage, shorter journeys and, quite often, less plastic packaging.

Seasonal food also tends to taste better. A tomato picked in August and eaten the same week has a sweetness and depth of flavour that a pale, travelled equivalent rarely matches. Cooking with what is abundant at that moment — and letting the calendar rather than the supermarket dictate the menu — is a quiet pleasure as much as an environmental one.

A Year of British Produce

The UK growing calendar is more generous than many people realise. Here is a rough guide to what to look forward to:

• Spring: asparagus from late April, wild garlic, radishes, spinach, spring greens, new potatoes and the first salad leaves.
• Summer: strawberries, raspberries, peas, broad beans, courgettes, cucumbers, tomatoes and sweetcorn at its peak in August.
• Autumn: apples and pears, blackberries, squash and pumpkins, kale, leeks, sweetcorn and maincrop potatoes.
• Winter: parsnips, celeriac, Brussels sprouts, cabbage, carrots, stored onions, and forced rhubarb from Yorkshire in the early months of the year.

Root vegetables and brassicas thrive in a British winter, which is why hearty soups, roasts and stews feel so right between November and March. Lean into that rhythm and you will find your shopping naturally becomes more local.

Practical Ways to Shrink Your Food Footprint

You do not need to overhaul your entire diet overnight. A few steady habits make a real difference:

• Check the origin label. If something has travelled by air, it is usually the most emissions-heavy option on the shelf. Choose closer-to-home alternatives where you can.
• Join a veg box scheme or shop at a farmers' market. These usually sell what is in season locally, often with minimal packaging.
• Plan meals around what is plentiful. Build the week's cooking around the vegetables that are cheap and abundant, rather than starting with a recipe and sourcing everything it demands.
• Freeze gluts. A summer surplus of soft fruit or beans, frozen at home, gives you local produce in January without any air freight.
• Waste less. For most households, the food thrown away has a bigger carbon impact than the miles it travelled. Use leftovers, make stock from scraps, and keep an eye on the fridge.
• Grow something. Herbs on a windowsill or a few salad leaves in a pot cut food miles to zero and reconnect you with the seasons.

Small Shifts, Lasting Change

Sustainable eating is not about guilt or perfection. It is about paying a little more attention — to where food comes from, when it grows, and how much of it we actually use. Buying British produce in its natural season, choosing the ship over the plane, and letting the calendar guide your cooking are simple habits that reduce emissions, support local growers and put better food on the table.

Start with one change this week: swap an out-of-season import for something grown closer to home and in season right now. You may find it tastes better than you expected, and the habit is far easier to keep than you imagined.