Pickled-Chilli Relish
Peer reviewed by UK recipe editorsAuthored by UK recipe editorsOriginally published 16 Jan 2026
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This vibrant pickled chilli relish is a versatile addition to any larder, offering a sophisticated balance of heat, acidity and depth. By roasting a whole head of garlic until soft and sweet, the sharp bite of the fresh chillies is perfectly tempered, creating a mellow savoury undertone. Using a variety of red, yellow and orange peppers not only provides a beautiful multi-tonal colour but also a complex flavour profile that enhances everything from grilled halloumi to cold cuts.
As a low-sugar condiment, this relish is a healthy alternative to shop-bought preserves that are often laden with sweeteners. It is an excellent way to use up a seasonal chilli harvest and makes a thoughtful homemade gift for those who enjoy a bit of spice. Simply store the sealed jars in a cool, dark place and enjoy this zesty preserve throughout the year with your favourite Sunday roasts or evening snacks.
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Ingredients for Pickled-Chilli Relish
1 head garlic
230g fresh red, yellow, and/or orange hot chillies
240ml distilled white vinegar
1 tablespoon sugar
1 bunch thyme
Equipment: 4 (1/4-pint) canning jars with screw bands and lids
canning tongs
How to make Pickled-Chilli Relish
Preheat oven to 177°C with rack in middle. Cut off and discard top of garlic head to expose cloves, then wrap head in foil and bake until very tender, about 45 minutes. Cool to warm, then peel cloves and transfer to a food processor.
Stem chillies and add to processor along with vinegar, sugar, and 1 1/2 teaspoons salt. Pulse until finely chopped.
Simmer chilli mixture in a small saucepan, stirring, 2 minutes.
Wash jars, lids, and screw bands in hot, soapy water, then rinse well. Dry screw bands. Put empty jars on a rack in a boiling-water canner or a deep 6- to 8-quart pot and add enough hot water to cover by 2 inches. Bring to a boil, covered, then boil 10 minutes. Remove canner from heat, leaving jars in water, covered. Heat lids in water to cover by 2 inches in a small saucepan until water registers 82°C on an instant-read or candy thermometer (do not let boil). Remove from heat. Keep jars and lids submerged in hot water, covered, until ready to use.
Carefully remove jars and lids with canning tongs, then drain jars upside down on a clean kitchen towel and quickly dry lids.
Place 2 or 3 thyme sprigs in each jar and ladle sauce (while still hot) into jars, leaving 1/4 inch of space at top. Run a clean rubber spatula between sauce and sides of jars to eliminate air bubbles. Wipe off rims of filled jars with a damp clean kitchen towel, then firmly screw on lids with screw bands.
Put sealed jars in canner (on rack) or pot and add enough hot water to cover by 2 inches. (If you have a jar that is partially full, do not process it. Cover it with a lid and screw band, then keep in refrigerator.) Bring to a full boil, covered, then boil, covered, 10 minutes. Transfer jars with canning tongs to a towel-lined surface to cool. Jars will seal and eventually have concave lids (you may hear a ping).
After jars have cooled, 12 to 24 hours, press centre of each lid to check that it's concave, then remove screw band and try to lift lid with your fingertips. If you can't, the lid has a good seal. Replace screw band. Put any jars that haven't sealed properly in the refrigerator and use them first.
Disclaimer
While every effort has been made to ensure the information is accurate and up to date, individual needs may vary and dietary requirements can differ based on personal health conditions. Always check food labels and allergen information before preparing or consuming any recipe. If you have specific health concerns, allergies, intolerances, or are following a medically prescribed diet, seek advice from your GP, pharmacist, or a registered dietitian before making significant changes to your diet or lifestyle.
Article history
The information on this page is peer reviewed by qualified clinicians.
16 Jan 2026 | Originally published
Authored by:
UK recipe editors
Peer reviewed by
UK recipe editors

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