No-Churn Black Forest Ice Cream - a hint of rosemary

Ingredients

• 12 ounces pitted cherries, fresh or frozen ((350 grams))
• 1/4 cup granulated sugar ((50 grams))
• 2 tablespoons water ((29 grams))
• 1 teaspoon arrowroot starch or cornstarch ((2.5 grams))
• 1 teaspoon water ((5 grams))
• 5 ounces finely chopped dark chocolate ((141 grams))
• 10 ounces sweetened condensed milk ((382 grams))
• 2 teaspoons pure vanilla extract ((8.6 grams))
• 1/4 teaspoon kosher salt ((1.5 grams))
• 1/2 cup mascarpone cheese, at room temperature ((4 ounces / 113 grams))
• 2 cups whipping cream ((16 ounces / 480 grams))