Green puff recipe

1. **Ingredients**: **For the Choux Pastry**: - 1/2 cup (120ml) water - 1/2 cup (120ml) milk - 1/2 cup (113g) unsalted butter - 1 tablespoon sugar - 1/2 teaspoon salt - 1 cup (125g) all-purpose flour - 4 large eggs **For the Filling**: - 2 cups (480ml) heavy cream - 1/4 cup (50g) granulated sugar - 1 teaspoon vanilla extract