Place the chopped dark chocolate in a double boiler over simmering water. Stir gently until melted.

Once the chocolate is melted, remove it from heat and stir in the sweetened condensed milk.

Add the vanilla extract and a pinch of sea salt to enhance the flavors.

Gently fold in the chopped pistachios.

Line your chocolate bar mold or small baking dish with parchment paper.

Carefully pour the chocolate mixture into the prepared mold.

Place the mold in the refrigerator for at least 1 hour to set.

Once set, remove the chocolate from the mold and cut into bars.