Using a sharp knife, cut passion fruits in half and use a spoon to scoop out the insides. Add pulp to pitcher.
Juice lemons using a citrus reamer or a juicer. Add juice to passion fruit pulp in pitcher.
Add sugar and water to the pitcher and mix well.
Serve well chilled, with ice, if desired.
Passion fruit seeds are safe to eat if you would like to keep them in the lemonade. If you do not like the seeds, feel free to strain them out.Give this drink more of a mocktail feel by swapping out water for sparkling water!