How much juice is in a lemon? A lot of recipes call for the "juice of a lemon". I keep a bottle of lemon juice in the fridge as this is easier, cheaper and more convenient than buying lemons all the time but my problem is I never know how much juice should come out of a lemon. Surely it depends how thoroughly you squeeze it?

Does anyone know approximately what volume of liquid is meant when a recipe says "juice of a lemon"?
It can range on the size of the lemon and the time of year.  A medium lemon will give 2-3 Tablespoons of juice, where a larger lemon can give 1/4 cup (4 Tablespoons).   Just have to decide on much lemon flavor you want in your recipe as to which number you pick.