The Glut Is a Gift, Not a Problem

By late August, the vegetable patch can feel less like a hobby and more like a takeover. Courgettes swell to marrow proportions overnight, tomatoes ripen in a crimson avalanche, and the onion crop hangs in golden ropes. It is a lovely problem to have, but a problem nonetheless. This is where bottling and chutney come into their own. Unlike freezing, which relies on electricity, or drying, which needs space and patience, bottling and chutney turn a surplus into shelf-stable jars that taste of sunshine in January. The principles are simple: acid, sugar, heat, and clean jars. Get those right, and you can preserve almost anything.

Sterilising Jars: The One Step You Must Not Skip

Every jar you use for bottling or chutney must be scrupulously clean and sterilised. This is not a step to rush. Residual grease or bacteria can spoil a whole batch, and the signs may not appear for weeks. Start by washing jars and lids in hot soapy water, rinsing well, then choose one of the following methods.

• Oven method: Place clean, dry jars on a baking tray and heat at 140°C (fan 120°C) for 15–20 minutes. Boil metal lids for 10 minutes, or use new lids that seal properly. Do not put rubber seals in the oven.
• Dishwasher method: Run jars through a hot wash cycle and leave them in the machine until you are ready to fill. This is convenient but only if your machine reaches a high temperature.
• Boiling method: Immerse jars in a large pan of water, bring to the boil, and boil for 10 minutes. Keep them in the hot water until needed, then lift out with clean tongs.

Fill jars while they are still hot, using a clean ladle or jug. Wipe the rim, seal immediately, and do not touch the inside of the lid. If you are water-bathing bottled sauces, process them as directed below.

Bottled Tomato and Courgette Sauce

This is a forgiving, versatile sauce that uses up both tomatoes and courgettes. It works as a pasta sauce, a base for soups, or a pizza topping. The vinegar and sugar balance the vegetables and help preserve the sauce.

• Ingredients: 2kg ripe tomatoes, 1kg courgettes, 500g onions, 4 garlic cloves, 150ml cider vinegar, 100g light brown sugar, 1 tbsp salt, a handful of fresh basil or 1 tsp dried oregano.
• Method: Roughly chop the tomatoes, courgettes, and onions. Simmer in a large pan with the garlic and herbs for about an hour, stirring often, until the mixture is thick and reduced. Add the vinegar, sugar, and salt, then simmer for another 20–30 minutes. Blend for a smooth sauce or leave it chunky.
• Bottling: Pour into hot, sterilised jars, leaving 1cm headspace. Seal with lids. For longer storage, process in a water bath: place jars in a deep pan, cover with water by 2cm, bring to a gentle boil, and process for 20 minutes. Lift out and cool undisturbed.

Check the seals once cool: the lid should be concave and firm. Any that pop back should be stored in the fridge and used within a week.

Courgette and Onion Chutney

Chutney is the ultimate destination for a courgette mountain. The long, slow cooking transforms bland marrows into a sweet, tangy, spiced preserve that improves with age. This recipe makes about six 300ml jars.

• Ingredients: 1.5kg courgettes, 500g onions, 2 cooking apples, 500ml malt vinegar, 300g demerara sugar, 1 tbsp mustard seeds, 1 tbsp ground ginger, 1 tsp ground cinnamon, 1 tsp salt.
• Method: Dice the courgettes, onions, and peeled apples. Put everything in a heavy-based pan. Bring to a simmer, then cook uncovered for 1.5–2 hours, stirring regularly to prevent sticking. The chutney is ready when a wooden spoon drawn through the mixture leaves a clean channel.
• Potting: Spoon into hot, sterilised jars, pressing down to remove air pockets. Seal and label. Leave to mature for at least four weeks before eating; the flavour deepens beautifully.

If you prefer a smoother chutney, blend half the mixture before potting. For a fiery kick, add a chopped chilli or a pinch of cayenne.

Labelling and Storing for a Taste of Summer

Labelling is not just about looking neat on the shelf. It is a practical record that tells you exactly what is in each jar, when you made it, and how long it has matured. This matters if you have several batches on the go, or if you give jars away to friends and family.

• Include on every label: the name of the preserve, the date it was made, the full list of ingredients, and any allergens such as mustard or sulphites from vinegar.
• Use what you have: sticky labels, masking tape, or a permanent marker on the lid. Write clearly and stick to the side or top of the jar.
• Store correctly: keep jars in a cool, dark, dry place. A cupboard or pantry is ideal. Check seals before opening. If a jar is unsealed, smells off, or shows any mould, discard it without tasting.

With a shelf of labelled jars, you can open a taste of late summer whenever you like. The glut becomes a gift that keeps giving, and the smallholding kitchen feels all the richer for it.