01 -
Bring a medium pot of water to a boil. Add shelled pistachios and boil for 3 minutes. Drain well and transfer to a clean kitchen towel.
02 -
Fold the towel over the pistachios, vigorously rub to loosen skins. Separate pistachios from skins and discard skins. Ensure pistachios are completely dry.
03 -
Combine butter and 60 ml (1/4 cup) milk in a small microwave-safe bowl. Heat in 20-second intervals until butter melts and milk is hot. Add chopped white chocolate, stirring until melted and smooth. If needed, heat an additional 10-15 seconds.
04 -
Place dried pistachios in a blender. Add confectioner's sugar and salt. Pour in the melted white chocolate mixture. Pulse on medium speed until pistachios form a thick paste.
05 -
Gradually add remaining milk, a few tablespoons at a time, blending between additions until desired consistency is reached. The mixture will thicken as it cools.
06 -
Pause blending 3-4 times to scrape down sides. Process on high power for 30 seconds to 1 minute until smooth and creamy.
07 -
Transfer pistachio cream to an airtight container. Refrigerate until use; keeps well in the refrigerator for up to 2 weeks.