Can you eat olives off the tree?
Mia Phillips
Updated on May 22, 2026
While olives are edible straight from the tree, they are intensely bitter. Olives contain oleuropein and phenolic compounds, which must be removed or, at least, reduced to make the olive palatable.
Are olives off the tree poisonous?
Many olives have an enzyme called catechol oxidase that causes them to change from a green to a red-brown to a black, but some just stay green or black. But at all of these stages, they are too bitter though not toxic to eat, because of a chemical called oleuropein, which also has anti-microbial properties.Is it safe to eat raw olives?
Raw olives are far too bitter to eat, and can only be enjoyed after they are processed, usually by curing or pickling them. Most olives are made into olive oil, but some olives are preserved to be enjoyed in meals, especially in Mediterranean cuisine.How do you prepare olives off the tree?
Combine 1 part salt to 10 parts water and pour over the olives in a bowl or pot. Weigh them down with a plate and let sit for 1 week. Drain the olives and repeat the brining process for another week. Do this two more times so they brine for about a month or so.When can you eat olives off the tree?
When Can You Eat Olives Off The Tree? Since there is such an intense bitterness in olives on the tree, you cannot eat them until they are cured to remove those bitter compounds.Can you pick olives off the tree and eat them?
What do you do with olives after you pick them?
Olives need to be pickled following their harvest. Pick the olives when they nearly ripe, when they have begun to change colour from green to pinkish purple but are not fully black.How do you prepare black olives to eat?
Cut two slits in each olive and then place these into a tub filled with water to cover. Keep the olives submerged and change the water every day, for 6 days. On the next day, instead of re-filling with water, pour over some plain white vinegar (the cheap no-name brands will do) and leave overnight.How do you make olives edible?
Brine-curing: Brine-curing involves soaking olives in salt water for three to six months. Under the brine, olives ferment, breaking down the oleuropein and converting some of the sugar in the olives into lactic acid, which preserves and flavors the olives.How do you preserve home grown olives?
Vinegar and oilAdd 250ml of white wine vinegar for every 1L of brine and continue as above. Once cured, store the olives in the brine or drain and completely cover in extra-virgin olive oil, to which you can add flavourings such as dried oregano, chilli or fennel seeds.