Domakihub Cure Olives at Home: From Tree to Table in Your Own Kitchen
A practical guide to removing bitterness and preserving your harvest using water, brine, or dry-salt methods.
Reviewed by Domakihub garden pros · 2026-06-23 · 5 min read
Greece produces some of the finest olives in the world, and if you have a tree on your property — whether a private home, holiday villa, or hotel garden — curing your own harvest is both practical and rewarding. The video above walks through the lactic fermentation method step by step, while this guide gives you the full process with timing, ratios, and troubleshooting tips. With a little patience and the right salt-to-water ratio, you can turn freshly picked olives into table-ready treats that last for months.
Why Fresh Olives Cannot Be Eaten Straight from the Tree
Raw olives contain a bitter compound called oleuropein, which makes them completely inedible without curing. The curing process — whether using water, brine, dry salt, or lye — draws out this bitterness through osmosis and triggers fermentation that develops the complex flavour you expect from a good table olive.
The method you choose depends mainly on how much time you have and what texture you want. Water-curing is the gentlest and quickest for green olives; brine-curing produces firm, flavourful results and is the traditional Greek approach; dry-salting yields a wrinkled, intensely flavoured olive popular in Crete and Kalamata-style preparations.
Choosing the Right Olives and the Right Moment to Harvest
For table olives, pick fruit that is fully sized but still firm. Green olives should be harvested before they change colour, typically in October or early November in most parts of Greece. Olives that are turning — showing a reddish-purple blush — are slightly riper and work well for brine-curing. Fully black olives are best suited to dry-salt or oil-curing methods, as their skin is thinner and more delicate.
Reject any fruit with worm holes (olive fly damage) or soft spots, as these will not cure cleanly and can contaminate the entire batch. A single bad olive does not ruin a jar, but a handful will.
How to Cure Olives at Home: Step by Step
- 1
Score or crack each olive
Before any curing can begin, you need to break the skin or flesh to let the bitterness escape. For green olives, make a single lengthwise cut with a small knife, or crack them lightly with a flat stone or meat mallet. Black olives for dry-salt curing can be pierced in several places with a fork or skewer. Skip this step only if you are doing a very long water cure of six weeks or more.
- 2
Water-soak to remove oleuropein
Place the scored olives in a large non-reactive container (glass, ceramic, or food-grade plastic) and cover completely with cold fresh water. Change the water every 24 hours. Taste one olive each day from the end of week one onwards: when bitterness has dropped to a mild, pleasant level — usually after 7 to 14 days for scored green olives — they are ready to move to the brine stage.
- 3
Prepare a salt brine
Dissolve non-iodised salt in cold water at a ratio of roughly 60 g salt per litre of water (about a 6% brine) for a mild cure, or up to 100 g per litre for longer preservation. Add a splash of red or white wine vinegar if you like a slightly sharper flavour. Pour the brine over the drained olives, making sure all fruit is fully submerged; weigh them down with a small plate or zip-lock bag filled with brine if needed.
- 4
Ferment and wait
Seal the jar loosely (or cover with a cloth) and store at cool room temperature, away from direct sunlight. Brine-cured olives are ready to eat after about three to eight weeks, depending on the size of the fruit and how mild you like them. Taste weekly from week three. The brine will cloud slightly as fermentation proceeds — this is normal and desirable, as it means lactic acid bacteria are doing their work.
- 5
Season and store
Once the olives reach your preferred flavour, drain and rinse them, then pack into clean glass jars with your chosen aromatics: garlic, dried oregano, lemon zest, chilli flakes, bay leaves, or a sprig of fresh thyme all work well. Cover completely with a light brine (5%) or good-quality olive oil. Sealed jars keep in the refrigerator for up to six months; oil-packed olives are best used within eight weeks once opened.
Rather have a pro handle it?
Get a vetted gardening pro in your city — one number, booked in EN/EL/DE.
FAQ
- How long does it take to cure olives at home?
- It depends on the method. Water-curing scored green olives typically takes 7 to 14 days of daily water changes. Moving to a salt brine adds another three to eight weeks before the olives are fully cured and table-ready. Dry-salt curing of ripe black olives can take four to six weeks. Plan on a minimum of four weeks from harvest to jar for most home methods.
- What salt should I use, and can I use table salt?
- Always use non-iodised salt — sea salt, kosher salt, or pickling salt all work well. Iodised table salt can inhibit the beneficial lactic acid bacteria needed for fermentation and may turn the brine dark. Coarse sea salt is ideal and is widely available throughout Greece at supermarkets and traditional grocery shops.
- My brine has turned cloudy or white — is the batch ruined?
- Cloudy brine is completely normal and is actually a good sign. It means lactic acid fermentation is active, which is exactly what you want. The only warning signs to watch for are a foul or rancid smell (different from the normal slightly sour fermentation scent), pink or red mould on the surface, or olives that have become slimy. If any of these appear, discard that batch and start fresh with sterilised jars.