Cook the beets – Scrub clean and trim, leaving about 1 inch of stems. Boil or roast until fork-tender (30–40 minutes depending on size). Cool slightly, then slip off skins.
Slice or quarter – Cut beets into rounds, wedges, or leave whole if very small.
Make the brine – Combine vinegar, water, sugar, salt, and spices in a saucepan. Simmer until sugar dissolves.
Pack jars – Fill clean jars with prepared beets.
Add brine – Pour hot brine over beets, leaving ½ inch headspace. Seal jars with lids.
Refrigerate – Store jars in the refrigerator. Allow 24 hours for flavors to meld—best after 3–5 days.