Which low-waste kitchen swaps actually last?

The swaps that last are the ones you already use every day: glass jars, cloth towels, a sturdy cutting board and a container for scraps. They work because they replace a habit, not just a product. Start with what you own, and change one thing at a time.

Start with what you already have

A low-waste kitchen does not need new gear. The most sustainable jar is the one that is already in your cupboard.

Before you buy anything, look around your kitchen. You may already own more than you think.

• Jars from pasta sauce, jam or pickles. Wash them and keep them for dry goods, leftovers and sprouting.
• Old cotton T-shirts and towels. Cut them into cloths.
• Takeaway tubs with good lids. Use them for the fridge and freezer.
• Tins and glass bottles. Use them for utensils or small herb pots.

Plant-based cooking already produces a lot of peels, stems and ends. A few simple habits make that waste useful.

Swaps that tend to last

Some swaps fade after a few weeks. Others stay for years. These usually stay.

Cloth instead of paper towels

Cut old fabric into squares. Keep a small stack by the sink and a bin or bag for used ones. Wash them hot with your normal laundry. Use separate cloths for wiping floors and for wiping food surfaces.

Jars and tins instead of cling film

Put leftovers in a jar or a lidded tub. For a cut half of an onion or lemon, use a small plate on top of a bowl. A damp cloth over a bowl also works for dough.

One good knife and one board

A sharp knife makes it easier to use every part of a vegetable. You peel less and waste less. A sharp knife is also safer than a dull one, because it needs less force.

A scrap container

Keep a lidded tub in the freezer for vegetable ends. Onion skins, carrot tops, mushroom stems and celery leaves go in. When the tub is full, simmer them for stock and strain it.

Bulk and refill shopping

If a shop near you sells dry goods by weight, bring your own clean jars or bags. If not, buy larger packs of what you use often, such as rice, oats and lentils. This is a general tip, not a rule. A large pack only helps if you finish it before it goes stale.

Keep food safe while you cut waste

Low waste should never mean unsafe food. A few basic rules help.

1. Cool cooked food quickly, then put it in the fridge or freezer within 2 hours.
2. Eat fridge leftovers within 3 to 4 days.
3. Reheat leftovers until they are steaming hot all the way through. The University of Illinois Extension gives 165 degrees Fahrenheit as the target.
4. Wash jars and tubs well with hot, soapy water before you reuse them.
5. Label containers with the date. Masking tape and a pen are enough.

Do not reuse jars that held something you cannot clean fully, or jars with cracked glass or rusty lids. Glass can break if you pour boiling liquid into a cold jar. Let hot food cool a little first, and leave space at the top before freezing, because liquid expands.

Wash cloths often. A damp, dirty cloth can hold germs and smell bad.

Deal with scraps without guilt

Not all scraps can be used in the kitchen. That is fine.

• Use soft herb stems in sauces and soups.
• Blend broccoli stems into soup, or slice them thin for stir-fries.
• Dry stale bread and make breadcrumbs.
• Freeze overripe bananas for smoothies or baking.
• Compost the rest if you have a safe way to do it. A city compost collection or a community garden bin is often easier than a home bin.

If you compost at home, keep the bin closed and away from children and pets. Do not add cooked food, oil or large amounts of citrus. Wash your hands after you handle it.

What to skip, at least at first

Some "low-waste" purchases do not help much.

• A matching set of new jars, when you have old ones.
• Special storage gadgets you will use twice.
• Throwing out working plastic containers. A plastic tub you keep for ten years often has a smaller footprint than a new glass one. Use what you have until it wears out.

This is a general view, not a precise calculation. The real impact depends on how long you use each item.

A simple first month

1. Week one: collect jars and lids. Start a freezer scrap tub.
2. Week two: cut a stack of cloths from old fabric.
3. Week three: plan three meals around what is already in the fridge.
4. Week four: check what you still threw away, and pick one more change.

You may find that your bin is already lighter. If not, that is also fine. Habits take time.

Some people find it easier to share this journey. Deerdate, the voice-first app we are building for plant-based people, is coming soon. It will have small hosted tables where people can talk about ordinary things like this.

Frequently asked questions

Are glass jars always better than plastic tubs?

Not always. Glass is easy to clean and does not hold smells. It is also heavier and can break. If you already own plastic tubs that are in good shape, keep using them.

Can I freeze food in glass jars?

Yes, if the jar is made for it and you leave space at the top for the food to expand. Let hot food cool first. Cold glass that gets a sudden heat shock can crack.

Is it safe to reuse old takeaway containers?

Many are fine for cold storage. Do not heat them in the microwave unless they say they are microwave safe. Throw away any that are warped, cracked or stained badly.

How do I stop herbs and greens going slimy?

Keep them dry. Wrap them in a clean cloth and put them in a lidded tub in the fridge. Check them every day or two and use the softest first.

Sources

• University of Illinois Extension, Leftovers (2026, accessed): https://extension.illinois.edu/food-safety/leftovers
• Written from general knowledge for the other tips; no single source.