How to Compost Food Scraps at Home: A Beginner's Guide

Even the most careful cook ends up with scraps: carrot tops, coffee grounds, apple cores, the wilted outer leaves of a lettuce. While the best move is always to use what you can (a great habit we cover in making vegetable stock from scraps), some peels and pits simply can't be eaten. That's where composting comes in.

Composting turns those unavoidable scraps into dark, crumbly, nutrient-rich soil instead of sending them to a landfill, where they release methane. It's easier than most people think, and you don't need a big backyard to do it. Here's how to start.

Why Compost in the First Place?

When food waste goes to landfill, it's buried without oxygen and breaks down into methane, a greenhouse gas far more potent than carbon dioxide. Composting lets scraps break down with air instead, producing something genuinely useful.

• It shrinks your bin. Food scraps make up a huge share of household rubbish. Diverting them means fewer trips to the bin and less smell.
• It's free fertiliser. Finished compost feeds houseplants, herbs, and gardens without store-bought products.
• It closes the loop. The food that grew for you goes back into the soil to grow more.

What You Can and Can't Compost

A healthy compost pile is a balance of two things: "greens" (wet, nitrogen-rich material) and "browns" (dry, carbon-rich material). Aim for roughly two to three parts browns to one part greens.

• Greens (add these): fruit and vegetable peels, coffee grounds and paper filters, tea leaves, crushed eggshells, grass clippings, and trimmed herbs.
• Browns (add these): dry leaves, shredded cardboard and paper, paper towel rolls, sawdust from untreated wood, and straw.
• Leave these out: meat, fish, dairy, and oily or greasy food (they attract pests and smell), plus anything treated with chemicals. Home piles rarely get hot enough for these to break down safely.

Choosing a Method That Fits Your Space

You don't need land to compost. Pick the option that matches where you live:

• Outdoor bin or pile: Ideal if you have a yard. A simple enclosed bin keeps things tidy and warm.
• Countertop caddy + collection: Many towns now offer curbside food-scrap pickup. A small lidded caddy on the counter collects scraps until pickup day.
• Worm bin (vermicomposting): Perfect for apartments. A contained bin of red wriggler worms quietly turns scraps into some of the richest compost there is, with no odour when balanced.
• Bokashi bucket: A ferment-based system that handles scraps quickly in a sealed bucket, even small amounts of dairy and cooked food.

A Simple Routine to Get Started

Composting works best when it becomes a background habit, not a chore. Try this rhythm:

• Keep a lidded container by the sink or in the freezer for daily scraps. Freezing stops smells and fruit flies entirely.
• Every few days, empty it into your bin or pile and cover with a handful of browns.
• Give an outdoor pile a stir or turn once a week to add air, which speeds things up and prevents sogginess.
• If it smells sour or looks slimy, add more browns. If it's bone dry and nothing's happening, add a splash of water and some greens.

Troubleshooting Common Problems

Most composting hiccups have quick fixes:

• Bad smell: too many greens or not enough air. Add browns and turn the pile.
• Fruit flies: exposed food scraps. Always bury fresh scraps under browns, or freeze them first.
• Nothing breaking down: too dry, or pieces too big. Add moisture and chop scraps smaller.

Compost Is the Last Step, Not the First

Here's the key mindset shift: composting is what you do with what you genuinely can't use, not a licence to buy more than you need. The biggest wins still come from shopping thoughtfully and cooking what you already have. Planning meals around your fridge, as we explain in what to cook with what you have, means fewer scraps in the first place.

To keep track of what needs using before it hits the compost bin, let Food Waste Manager remind you what's about to expire. Compost the peels and pits, eat the rest, and you'll waste less, spend less, and give something back to the soil.