158 grams (5.5 ounces) Dutch-process cocoa powder
1/4 teaspoon kosher salt
1 1/2 cups water
600 grams (3 cups) sugar
2 tablespoons light corn syrup
1 tablespoon vanilla extract
2 teaspoons finely ground and sifted black cardamom (see Cook's Note)
After grinding the cardamom finely in a spice grinder, you'll have to sift out the fibrous threads. Yes, it's worth it.