- 1 (8-ounce) box unsweetened chocolate squares
- ½ cup butter (1 stick)
- 1 (12-ounce) can evaporated milk (not sweetened condensed milk, and not a reduced fat or fat free variety)
- 2 cups (384g) granulated sugar
- 2 teaspoons flaky sea salt or kosher salt
- 2 teaspoons vanilla extract or vanilla bean paste