For long-term storage, fresh lemons keep best in a tightly sealed plastic bag in the refrigerator.
But if you don’t have a refrigerator or space in the fridge is limited, there is a time-tested low tech way to store fresh lemons.
Fresh lemons will store very well for about 6 to 8 weeks by being completely submerged in a ceramic crock of cold water.
Simply place lemons in a clean ceramic crock and cover them entirely with very cold water.
Set a small plate or water filled plastic bag on top of the lemons to keep them submerged and prevent them from floating. Allow the water to cover the plate. If you use a water filled plastic bag, add more water to weight the bag down if necessary to keep the lemons down in the cold water.
Store the crock in a cool location like an unheated basement or root cellar. Change the water every2 weeks or so and you’ll have a supply of juicy lemons whenever you want them.