Soak the gelatin in ice water.
In a medium sized pot, bring the lychee purée and 20 g Prova Gourmet Madagascar Bourbon Vanilla Flavor with Seeds (Alcohol Free) to a boil.
In a small bowl, whisk together the egg yolks and granulated sugar and pour into hot lychee mixture to temper.
Return mixture to pot and continue cooking, stirring often, until cooked to 179.6°F. Add hydrated gelatin and stir until dissolved.
Strain mixture over the 167 g Valrhona Ivoire 35% White Chocolate Baking Feves. Emulsify with a hand blender and allow to cool to 86°F.
Fold in whipped cream and transfer to piping bag.