Food & Water

Producing what we eat accounts for roughly a quarter of global greenhouse-gas emissions, and uses most of the world's freshwater. You don't need a perfect diet to help — a few consistent habits make a real difference.

Eat for a lighter footprint

What's on your plate matters more than where it came from. Animal products — especially beef and lamb — are by far the most resource-intensive foods, while plants like beans, lentils, grains and seasonal vegetables are among the lightest. You don't have to go vegan to benefit.

• Shift a few meals, not your whole identity. Swapping two or three red-meat meals a week for chicken, fish, eggs or legumes is an easy, high-impact start.
• Make plants the default. Beans, lentils and chickpeas are cheap, filling, protein-rich and store for years. Build a few reliable meals around them.
• Choose seasonal produce. In-season fruit and veg is usually cheaper, tastier and grown with less energy than out-of-season, heated-greenhouse or air-freighted alternatives.
• Right-size your portions. Cooking and serving the amount you'll actually eat is the simplest way to cut both cost and waste.

Cut food waste — the biggest quick win

Studies estimate that around a third of all food produced is wasted. When you bin food, you also bin the water, energy, land and money used to grow, ship and store it. Wasting less is the rare change that's good for the planet and immediately good for your wallet.

• Plan before you shop. A rough weekly meal plan and a list stop the over-buying that leads to forgotten, spoiled food.
• Store food well. Most vegetables last longer in the fridge; keep potatoes, onions and bread in the cupboard. Freeze anything you won't use in time — bread, herbs, fruit and leftovers all freeze beautifully.
• Understand date labels. "Use by" is about safety; "best before" / "best by" is about quality. Many foods are fine past their best-before date if they look and smell right.
• Cook with leftovers. Keep a "use-it-up" night each week to turn odds and ends into soups, stir-fries, frittatas or curries.
• Compost the rest. Peelings and scraps that can't be eaten become free soil instead of landfill methane. See our composting guide.

Shop a little smarter

Small changes at the shop reduce packaging and waste without costing more — often less.

• Buy loose fruit and veg instead of pre-packaged where you can, and only the amount you'll use.
• Bring reusable bags and produce bags so they're never an afterthought.
• Buy staples (rice, oats, pasta, beans) in larger or bulk quantities to cut packaging and price per serving.
• Check the "reduced" shelf — perfectly good food near its date, cheaper, and saved from the bin.
• Drink tap water where it's safe; a refillable bottle pays for itself almost immediately.

Save water in the kitchen and beyond

Clean water takes energy to treat and pump, and hot water adds to your energy bill, so saving water saves twice. A few kitchen habits go a long way:

• Only boil the water you need in the kettle.
• Rinse vegetables in a bowl rather than under a running tap, and reuse that water for plants.
• Run the dishwasher and washing machine only when full — modern dishwashers usually use less water than washing by hand.
• Fix dripping taps promptly; a steady drip wastes a surprising amount over a year.

For room-by-room fixes across the whole home, see our complete guide to saving water at home.

Your easy wins checklist

• Plan a few meals before your next shop and write a list.
• Swap two red-meat meals this week for beans, lentils, chicken or fish.
• Pick one "use-it-up" night to clear the fridge.
• Move a portion of food you won't finish into the freezer.
• Start collecting scraps for compost.
• Only boil the water you need, and fix any dripping taps.