How do you remove salt from olives?

Store in brine: Feta is traditionally sold in a brine solution (heavily salted water). It can be refrigerated, covered with the brine, for a long time. As the amount of brine decreases, add more. To make brine you mix one pound of kosher salt with 1 gallon of water. The salt may not dissolve completely; that is normal. If the feta is too salty, take the piece you want to use and soak it in a mixture of 1/2 water and 1/2 fresh milk for an hour. also you can alter the flavor of the feta by adding milk with the brine. I usually do this to make the feta smoother and creamier. But I worry about the milk spoiling so after about a week I change the mixture. I also replace the brine mixture every 4-6 weeks. Most Greeks don't, but I worry about contamination.