Sterilize jars and lids using your preferred method.
Thinly slice the onion and add to the pan. Soften over a medium heat until lightly caramelised.
1 large Onion
While the onions are cooking, grate beetroot (gloves optional), chop the chilli and zest the lemon.
2 large Beetroot (raw), 1 Chilli
Once the onions are caramelised add all remaining ingredients to saucepan. Simmer gently for around 15 minutes. When the relish passes the taste test, you're done.
½ cup Apple Cider Vinegar, ¾ cup Raw Sugar, 1 teaspoon Salt, Ground Black Pepper, 1 Zest of one Lemon
Spoon relish into the sterilised jars and seal with the lid while hot. Alternatively, follow recommended process for preserving method if taking this additional step.