Rinse the herring fillets thoroughly under cold water, then pat them dry with paper towels.
Cut the herring fillets into roughly 3-4 cm pieces and place them in a large bowl.
Sterilize the canning jars and lids in boiling water for 10 minutes, then let them air dry completely.
Thinly slice the red onion and garlic, then layer them with the herring pieces in the jars.
In a medium saucepan, bring the vinegar, water, salt, and sugar to a boil. Add the mustard seeds, black peppercorns, cloves, cinnamon stick, and bay leaves.
Simmer the brine over low heat for 5 minutes to allow the flavors to meld. Let it cool slightly.
Pour the cooled brine over the herring in the jars, ensuring the fish is completely submerged.
Seal the jars and let them cool to room temperature. Then, refrigerate for at least 48 hours to allow the flavors to develop.
The pickled herring will taste best after 3-4 days of marinating, but can be stored in the refrigerator for up to a week.
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.