Question: how much is 1/2 lemon?
Answer: There are 4 to 5 lemons in 1 pound. On average, one lemon has 2 tablespoons of lemon juice in it. One lemon also has 1 tablespoon of lemon zest in it. So if a recipe calls for the juice of 1 lemon you can substitute 2 tablespoons of bottled juice.