1. Cut the passion fruit in half in the middle, scrape the pulp and juice from the shell
2. Pour all the pulp and juice into an enamel pot, add rock sugar, stir while cooking, until the rock sugar is completely melted
3. After boiling on medium heat, turn to low heat and cook slowly, stirring constantly to avoid muddy bottom
4. Cook until the jam can stick to the spatula and will not drip quickly. Squeeze the juice of half a lemon
5. Continue to cook until the jam is sticky and does not drip on the spatula.
6. It's delicious with a little bit of warm water~~
