Scoop out the pulp, flesh and seeds from 8-10 passion fruits. Whiz for a few seconds in a blender to separate the pulp and seeds, strain to get ⅔ cup juice (160ml). Set aside. If using frozen puree, thaw completely.
Set yolks in a medium sized bowl and whisk, set bowl next to stove. Have a small measuring cup ready for tempering the yolks.
In a large bowl add one cup of the heavy cream, set aside.
In a medium sauce pan combine the remaining cup of cream, whole milk, sugar and salt and heat over medium, stirring to dissolve sugar, until hot and steaming but not bubbling.
Start whisking the eggs continuously and slowly add in some of the heated cream mixture a third of a cup at time in a thin stream until the eggs are hot ( tempered), scrape this mixture back into the saucepan and stir constantly over medium heat with a rubber spatula until thickened like custard.
Strain this mixture into the heavy cream in a bowl, to get rid of any little bits of cooked egg, and stir then stir in the passion fruit juice and vanilla extract. Cool completely before churning, a few hours.
Set out your ice cream pop molds with sticks on a tray that will fit into your freezer.
Churn the ice cream according to your maker’s directions. Spread ⅓ a cup of churned ice cream into each mold, all the way to the top making sure the tops are smooth. Freeze completely before dipping in chocolate. This might take a little while depending on how many molds you have. If you don’t have 12 molds, transfer the remaining churned ice cream to a freezer safe tub.
Once the pops in the molds are set, carefully remove starting with the top of the mold, folding it down and then press from the stick to pop them out. Set on a baking paper lined tray in your freezer.
Rinse the molds then dry and then repeat with remaining ice cream. You might have to thaw the ice cream in the tub slightly to get it soft enough to spread into the molds.