how much lemon juice equals one lemon
The amount of lemon juice that will equal one lemon varies upon the size of the lemon itself. Generally, a lemon can produce 1/4 cup of juice. If you microwave your lemon for 10 - 15 seconds before juicing it, you will get more juice out of it.
An average sized lemon gives 2-3 tablespoons of juice. However, sizes and quality of lemons vary pretty drastically, and some large lemons can give 1/4 cup of juice.
2 to 3 tablespoon of lemon juice equals one medium size lemon. If the recipe calls for a large lemon, add 1-2 more tablespoons of lemon juice.
There is about a quarter cup of juice in a lemon. This can vary depending on the size of the lemon you have.