A pitcher of lemonade with lemons in it
Here's How Much Lemon Juice You Need For A Pitcher Of Lemonade
For the best-tasting lemonade possible, use the juice from eight whole lemons, which comes out to about a cup and a half of pure lemon juice.
Since you only get around 2 to 3 tablespoons of juice from a single lemon, you may want to have a few extra lemons on hand just in case your juice yield is lower than expected.
Add 6 cups of water and a simple syrup mixture to the lemon juice. For a stronger flavor, try only using 5 cups of water, adding more lemon juice, or adjusting the amount of sugar.