Preserving Chillies by Drying and Freezing

Why Preserve a Glut of Chillies?

If you grow chillies in a greenhouse, on a sunny windowsill or in a polytunnel, you will know the feeling: nothing for months, then a late-summer avalanche. One week you are coaxing a single green fruit along, the next you are harvesting handfuls and wondering what on earth to do with them all. Even if you buy them, a supermarket pack rarely matches what a recipe needs, so half of it sits in the fridge drawer until it goes soft and wrinkly.

Preserving solves both problems. Dried chillies take up almost no space in the cupboard and keep their warmth for a year or more, while frozen ones behave almost like fresh when they hit a hot pan. You waste less, you rely less on imported produce flown in from warmer climes, and you get to enjoy your own harvest long after the first frosts have finished the plants off. It is one of the simplest bits of kitchen self-sufficiency there is.

Choosing and Preparing Your Chillies

Start by sorting your harvest into two piles. For drying, choose fully ripe, firm, unblemished fruits — the deep reds, oranges and yellows rather than the green ones. Green chillies will dry perfectly well, but they taste grassier and less sweet, and they tend to lose their colour. For freezing, almost anything goes, including slightly softer fruits that are still sound.

Discard anything mouldy, split or badly bruised, and compost it rather than adding it to the pile. Wash the chillies and dry them thoroughly with a clean tea towel — surface water is the enemy of both drying and freezing, as it encourages mould and ice crystals.

• Wear gloves if you are handling hot varieties, and never touch your face afterwards.
• Keep varieties separate so you know what you are cooking with later.
• Leave small chillies whole; halve or deseed larger ones to speed drying.

Drying Chillies in a Warm Place

The traditional method is the simplest: thread the chillies onto strong cotton or fine string using a needle, tying a knot between each one so they do not touch, then hang the string somewhere warm, dry and airy. An airing cupboard, a shelf above a radiator or a sunny porch all work well. They should be leathery within two to three weeks and crisp after four.

If you would rather speed things up, use your oven on its lowest setting — around 50–60°C, or gas mark ¼ if your oven goes that low. Halve the chillies, lay them cut-side up on a wire rack over a baking tray, and prop the oven door open with a wooden spoon so the moisture can escape. Expect six to ten hours. A dehydrator set to 55–60°C will do the same job in eight to twelve hours.

Whichever route you take, the test is the same: a properly dried chilli is brittle and snaps when bent, and the stem breaks cleanly rather than bending like leather. If it is still flexible, it is not ready. Under-dried chillies will go mouldy in the jar within weeks, which is a sad end to a summer's work.

Freezing Chillies Whole and Otherwise

Freezing is the fastest route from harvest to storage, and it preserves that bright, fresh chilli flavour remarkably well. Spread whole, dry chillies on a tray, freeze them for a couple of hours, then tip them into a reusable freezer bag or tub. Freezing them loose first stops them clumping into a solid block. Squeeze out as much air as you can, label with the variety and date, and they will keep for up to a year.

You do not need to defrost them before cooking. Take one or two straight from the freezer and slice while frozen — they are firmer and easier to handle that way, and they go into curries, chillies and stir-fries without any fuss.

• Chopped: blitz and freeze in small portions, ready to spoon straight into a pan.
• Ice cube trays: fill with chopped chilli and a little oil or water, then transfer the cubes to a bag once solid.
• Paste: blend with a splash of vinegar, garlic and salt, and freeze flat in bags for easy breaking off.

Storing and Using Your Preserved Chillies

Dried chillies want an airtight jar in a cool, dark cupboard, away from the steam of the kettle. Kept whole, they hold their aroma far better than pre-ground flakes, so grind them as you need them in a pestle and mortar or spice grinder. A jar of mixed dried chillies on the shelf is a quietly satisfying thing to look at in February.

To use dried chillies, soak them in warm water for twenty to thirty minutes until they soften, then chop and add them to sauces, stews and marinades. Keep the soaking liquid — it carries plenty of flavour and is excellent stirred into a braise or a pot of beans. Frozen chillies, meanwhile, can be dropped straight into anything cooked, or thawed overnight in the fridge for salads and salsas.

Small Habits That Make a Difference

Preserving is one of those kitchen habits that quietly reduces waste and food miles at the same time. A glut that would have gone to the compost bin becomes months of meals; a pack of chillies bought for one recipe gets used to the last one. Reusing the same glass jars year after year, rather than buying new storage containers, keeps things simple too.

Work in small batches, keep everything clearly labelled, and check your stored jars every few weeks for any sign of condensation or mould. Anything suspect goes straight out. And if you find yourself with more than you can reasonably use, preserved chillies make a genuinely welcome gift — a jar of your own dried harvest says far more than anything from a shop.