
2 cups whole milk
1 cup heavy whipping cream
2 vanilla beans, split and seeds scraped
2 (4-ounce) bars 60%-cacao bittersweet chocolate, chopped; plus additional grated for garnish
2 (4-ounce) bars milk chocolate, chopped
2 tablespoons packed organic brown coconut sugar
⅛ teaspoon flaky sea salt
⅛ teaspoon ground cardamom