Put two tablespoons of kosher salt in the bottom of your clean Mason Jar.
Then, cut one lemon to remove the stem end. The side that would have been connected to the tree.
Once this is done you will need to cut the lemon lengthwise into fourths. You want to try not to cut the lemon all the way through. I have attached a picture for easy viewing. The lemon should end up having an X or + shape pattern lengthwise.
Open the lemon where you made the cuts and put one teaspoon of kosher salt inside the lemons. Give the lemon a bit of a shimmy to move the salt around. It’s gonna make a mess and that’s fine. You want as much of the salt inside as possible.
Turn the lemon cut side down and place in your mason jar or canning jar. Give the lemon a firm squeeze to release a lot of the juices. Try to release as much as you can without breaking the lemon apart.
Repeat these steps with each of the lemons. Place each lemon in the jar making sure to pack them tightly. Fill almost to the top of the jar leaving about an inch of space.
Once filled, add two tablespoons of kosher salt to the top of the mason jar and close the lid. If the lemon juice does not go all the way above the top of the lemons, use additional lemon juice until it covers them. Note: If you run out of lemon juice you can add water.
Give the jar a shake and leave it on your counter to rest. Each day, for seven days, give it a shake. After seven days, stash it in the fridge and it’s good to use. They won’t be fully cured for 4-6 weeks in the refrigerator, but they are usable immediately. They just won’t be quite as funky until fully cured.