Why the Packed Lunch Matters More Than You Think

A good day on the fells can be undone by a bad lunch. Get it right and you'll stride up the last ascent with something left in the tank; get it wrong and you'll be dreaming of a chip shop from the second hour. The hill is not the place to discover that your sandwich has turned to wallpaper paste or that your "energy" bar tastes like sweetened sawdust.

The challenge is simple: food has to survive being squashed, jiggled and warmed inside a rucksack for several hours, taste good enough to actually eat when you're tired, and deliver steady energy without weighing you down. Here's how to get it right.

The Soggy Sandwich Problem, Solved

The classic British packed lunch — white bread, butter, ham, tomato — is a brilliant invention right up until it spends four hours in a rucksack. The culprit is moisture. Tomato slices, cucumber, lettuce and wet fillings all leak into the bread, and once that happens there's no going back.

The fix is to separate wet from dry until the moment you eat. A few approaches work well:

• Wrap, don't box. A tightly wrapped sandwich in greaseproof paper or cling film compresses less than one rattling around in a plastic tub.
• Butter as a barrier. A generous layer of butter or a smear of mustard on both slices creates a waterproof film that keeps damp fillings away from the crumb.
• Choose dry fillings. Hard cheese, sliced chorizo, cold roast beef, smoked mackerel, peanut butter and jam all travel beautifully. Save the salad for the plate at home.
• Carry wet elements separately. Cherry tomatoes, cucumber sticks and a little pot of pickle or chutney can be added at the summit.

If you want to skip bread entirely, wraps, bagels, pittas and oatcakes hold up better and don't squash into a single sad slab.

Carbohydrates That Earn Their Place

Hill walking burns somewhere in the region of 400 to 600 calories an hour for an average adult, so a dainty lunch won't cut it. You want slow-release carbohydrates for the long haul and something quick-acting for the steep bits.

Oats are a fell walker's best friend. Flapjack, oat-based cereal bars, or a slice of malt loaf all provide that slow, steady trickle of energy. Malt loaf deserves special mention — it's dense, squidgy, keeps for days and somehow tastes even better squashed flat at 800 metres.

Wholemeal bread, seeded rolls and rye crackers add fibre and keep you fuller for longer. Pair them with a handful of dried fruit — apricots, dates, raisins — for a fast top-up when you feel the lag coming on. A bag of mixed nuts and dried fruit is the closest thing to a perfect hill snack: calorie-dense, light, and impossible to squash.

Protein and Fat: Small Amounts, Big Difference

Protein and fat slow down digestion, which means steadier energy and fewer crashes. They're also what makes a lunch feel like a proper meal rather than a bag of snacks. You don't need much.

• Hard cheese — Cheddar, Cheshire or a waxed truckle. Keeps for hours, even in summer.
• Cured meats — chorizo, salami or a few slices of cold roast beef.
• Boiled eggs — protein-packed, though they do need a firm container.
• Nuts and seeds — almonds, cashews, pumpkin seeds, or a small pot of peanut butter.
• Tinned fish — a small tin of mackerel or sardines with a pull-tab lid is superb on a cold day, though you'll want to eat it away from polite company.

Fat also helps in the cold. On a winter walk, a few squares of dark chocolate or a piece of cheese will do more for your morale and your body temperature than a low-fat cereal bar ever will.

The Sweet Finish and the Hot Drink

Something sweet at the end of lunch is not indulgence — it's a legitimate morale tool on a grey, drizzly day. Dark chocolate, a piece of ginger cake, a couple of chocolate-covered ginger pieces or a handful of jelly babies all work. Ginger is especially welcome on a cold, wet walk, and sweets are quick to digest if you're feeling a bit flat.

The hot drink is the real hero though. A vacuum flask of tea, coffee or hot squash transforms a windswept lunch break into a small occasion. If you'd rather travel light, a small stove and a brew kit will make you the most popular person on the hill. Either way, bring more fluid than you think you need — dehydration masquerades as hunger more often than you'd imagine.

Packing and Practicalities

How you pack matters as much as what you pack. A few habits will save your lunch from the rucksack's rougher instincts:

• Pack lunch last, on top. You shouldn't have to empty your whole bag to find a sandwich.
• Use a rigid tub for squishable items and soft items around it.
• Double-bag anything wet — a leaking flask or a damp apple will ruin everything it touches.
• Keep the rubbish. There's nothing worse than chasing a wrapper across a windy ridge. Bring a small bag for your peel, wrappers and any crumbs that escape.
• Eat more than once. A single big lunch is fine, but most hill walkers do better with a steady grazing pattern: a proper break around midday, plus snacks every hour or so on the move.

Finally, be honest about what you'll actually eat when you're tired and cold. A perfectly balanced lunch you can't face is just weight in your pack. Test your lunches on a shorter walk before you rely on them for a big day out, and within a trip or two you'll have a hill-worthy menu that works every time.