In a double boiler, combine chocolate, cream, brandy, and vanilla extract. Stir until melted and smooth. Cover, and place in refrigerator until firm enough to roll into balls, about 2 hours.
Line a baking sheet with parchment paper. Using a small 1-inch spring-loaded ice cream scoop, scoop mixture into portions. Using your hands, roll each portion into a ball. Place back in refrigerator until firm, 1 hour.
Place candy coating in a microwave-safe bowl. Microwave on high (100% power) at 30-second intervals until melted and smooth (about
½ minutes total). Dredge balls in candy coating to coat. Set on parchment paper to dry. Garnish immediately with crushed pistachios, if desired.
Recipe by Southern Lady Magazine at https://southernladymagazine.com/pistachio-chocolate-truffles-recipe/