The amount of juice in one lemon can vary depending on several factors, such as the size of the lemon, its ripeness, and the juicing method used. On average, a medium-sized lemon will yield approximately 2 to 3 tablespoons (30 to 45 milliliters) of juice.
To get the most juice out of a lemon, it’s helpful to roll it on a hard surface, such as a countertop, to help break down the membranes inside the fruit. You can then cut the lemon in half and use a citrus juicer or a fork to extract the juice.
It’s also important to note that lemon zest, or the outer layer of the lemon peel, can add a lot of flavor to recipes as well. When zesting a lemon, use a microplane grater or a zester to remove the colored part of the peel, being careful not to get any of the bitter white pith underneath.