This is based off of fresh passionfruit juice from our garden. Fruit will vary in sweetness/tartness so adjust amount and sugar amount to taste. This is pretty tasty as a cocktail with the addition of rum and a bit more lime.
There are different varieties of passion fruit, some much less tart and sweeter than others. Adjust sugar for different varieties and to taste.
If you are a pulp-free type, make a mint simple syrup (see Note 2)
instead of muddling the mint leaves and sugar.