I have an olive tree in my yard. Right now there are little baby olives growing. These are about the size of a tic-tac. You can't eat them right off the tree because they're very bitter. They have to be cured. How, you ask? Here's a good website about curing OLIVES.
Personally, I like to mix a solution of vodka and vermouth, then skewer two or three olives onto a small wooden or plastic stick (toothpick works great.) and soak the olives in the solution. Gradually decrease the amount of solution over a short period of time. When solution is gone, the olives are done! :-)