How to Reduce Food Waste in your Kitchen

Food waste has a way of sneaking into our kitchens and adds up more than we realise. In fact, the average Australian household throws out around 300kg of food each year. That's good food and hard-earned money lost, along with the resources it took to grow and transport it. And when those scraps hit landfill, they can’t break down properly, instead releasing methane, a greenhouse gas far more potent than CO₂.

The good news? Reducing food waste in your kitchen is easier than you think, and a few simple, realistic changes can save money and help the planet. Here’s how to make your kitchen more sustainable.

Step 1: Shop with intention

Less food coming in means less waste going out. Households account for roughly 30% of Australia’s total food waste, which equates to about 2.5 million tonnes per year. A little planning is one of the best ways to cut kitchen waste:

• Meal plan for the week to save money, time, and reduce impulse buys.
• Bulk food shops are great for topping up only what you need, reducing overbuying (and plastic packaging).
• Buy loose fruit and vegetables so you can only buy what you need and avoid them spoiling.
• Don’t shy away from “imperfect” fruit and veg. They taste just as good, often cost less, and help reduce the amount of perfectly edible food that never makes it to supermarket shelves.
• Choose single loose bananas instead of a bunch, they’re often left behind and end up in a bin.
• Learn the difference between "best before" (about quality) and "use by" (about safety). Lots of food is still perfectly fine after its best before date, which helps cut unnecessary waste. If in doubt, give it the sniff test rather than just throwing it.

Don’t overcomplicate it. Think of this as a way to make life easier. Spending a little time at the start of the week saves money, cuts stress, and means you’ll thank yourself when you don’t have to face that dreaded question: “What’s for dinner?”

Step 2: Save money while cutting food waste

Reducing food waste isn’t just good for the planet, it’s good for your wallet. The average Aussie household could save $2,000–$2,500 a year simply by reducing food waste. To double down on savings, there are some very cool brands helping rescue surplus food at a fraction of the cost:

• Too Good To Go pick up “surprise bags” of leftover meals and baked goods from local cafés, bakeries, grocery stores and restaurants at discounted prices.
• Foody Bag connects you with cafés, bakeries, and grocers offering surplus food at reduced prices, keeping great meals out of landfill.
• EatClub offers real-time discounts on meals from restaurants with last-minute availability, reducing food waste and giving you a bargain.
• Kitche helps you cut waste at home with thousands of recipes you can filter by what needs using up in your fridge. You can even scan receipts to track purchases and get reminders when it’s time to move food into the freezer.
• Beyond Best Before an online and physical store selling products close to or just past their best-before date at up to 90% off, tackling supermarket waste and saving you money.

Rescuing food that would otherwise be discarded not only makes us feel like better humans but also supports local businesses in reducing their waste.

Beyond the kitchen: Australian hospitality generates around 1.2 million tonnes of food waste each year, mostly from prep stages like trimming and pre-cooking rather than leftovers on plates (though over-ordering is still worth keeping in mind). The good news? Innovative zero-waste venues are proving sustainability can be seriously tasty. A must-try is Refettorio in Sydney, serving a three-course vegetarian set menu made with up to 95% rescued ingredients, and every meal you enjoy helps fund two meals for people in need.

Step 3: Organise your fridge

We’ve all found something sad and slimy hiding at the back of the fridge. A tidy fridge goes a long way. These easy food storage tips can help keep ingredients fresher for longer and reduce waste:

• Move older food to the front when unpacking groceries.
• Make an “eat me first” container for items that need using soon.
• Store cut carrots, celery, and other veg in water to keep them crisp and snack-ready.
• Wrap leafy greens in a damp tea towel to extend freshness.
• Store herbs, broccoli and celery upright in jars of water, like flowers.
  
• Clear containers are your best friend, if you can see it, you’re more likely to eat it.
• Keep leftovers for tomorrow's lunch, two birds with one stone, and a lot less effort!

When veggies start to wilt, get creative with soups, stir-fries, frittatas, sauces or freeze chopped veggies to give them new life. Overripe bananas? Perfect for smoothies or baking. Veggie scraps? Freeze them for a homemade stock that costs nothing but gives all the flavour.

Cooking too much is one of the biggest waste culprits. Try serving smaller portions and keeping extra in containers for another meal, it’s easier to add more than to throw out leftovers.

Step 4: Grow or make your own

There’s something deeply satisfying about using what you’ve grown or baked – it genuinely does taste better!

• A pot of herbs on the windowsill or balcony saves last-minute dashes to the shop to only find it's wilted before the next time you need it.
• Beginner-friendly growers like cherry tomatoes, carrots, onions, and sugar snap peas give fresh produce on hand as you need it.
• Use scraps like the ends of celery or spring onions to regrow new ones, just place them in water and watch them sprout.
• Homemade snacks like muffins, muesli bars, and banana bread reduce packaging waste and unnecessary additives. Freeze half the batch so it doesn't spoil, your future self will thank you. Weekend baking sessions are great for family time and mental health.
• Make homemade hummus to level up your carrot sticks to an easy healthy option you will actually grab for. Here's the recipe we use.
• Try making your own bread, there’s nothing quite like freshly baked bread hot from the oven, here's an easy recipe we love, I recommend adding some seeds or a walnut and cranberry combo! Or if you don't have time, buy it fresh from your local bakery then chop it up and pop it in the freezer before it goes stale, it toasts perfectly when you need it.

We’re all about taking cues from our grandparents’ era with slower, simpler, more mindful living.

Step 5: Compost scraps and dispose right

There will always be scraps, and that’s okay. The trick is keeping them out of landfill:

• Compost bins or worm farms have a huge impact and your garden will love you for it.
• Council FOGO bins are an easy win if available.
• No compost? Peels App connects you with locals who’ll happily take your food scraps.
  
• If you have extra food, share it with your neighbours, surplus lemons from your tree or leftover muffins from a bake can create the best community vibe.

Keeping food out of landfill stops methane emissions and returns nutrients to the soil which is a win for everyone.

Step 6: Learn and get inspired

Want to go deeper? There’s a heap of resources to help you understand food waste and get creative with reducing it:

• OzHarvest’s knowledge hub packed with facts, tips, and recipes to reduce food waste at home.
  
• Follow social accounts that dish up clever tips, tasty recipes, and inspiring stories. A few faves: plantyou, lagomchef, in_my_patch_, ozharvest, and endfoodwasteaus.
• Watch War on Waste an eye-opening series shows how much food, plastic, and general waste is produced in Australia, and practical ways we can all make a difference.
• Read books like Waste Not by Erin Rhoads to learn clever ways to use every bit of your ingredients.
• Check your local council’s sustainability pages for workshops, composting guides, and community programs.

Learning a little more about the bigger picture can make these small kitchen swaps feel even more meaningful, plus, it’s actually kind of fun to see how creative we can get with food, packaging, and leftovers.

Why this matters to us at Zilch

Reducing food waste doesn’t mean giving up the things you love. It’s about building small, sustainable habits. At Zilch, this is exactly why we do what we do: making eco-friendly swaps easy and accessible for busy people. We’re 100% plastic-free because less waste is better for your home, wallet, and our planet.

These are the same tips I use at home with my family. Every small change counts and together it adds up to something powerful. Start small, keep it simple, and most importantly, have fun with it!