Preheat the oven to 375°F (190°C). Tear the marzipan into small pieces and spread out on a baking sheet lined with parchment paper. Bake for 5 to 10 minutes, until turning golden in places. Store-bought marzipan will brown in about 5 minutes and homemade takes about 12, so keep watch. Transfer into a blender with the coconut milk and blend until silky smooth. Chill for 2 hours.
Churn in an ice cream machine according to the manufacturer’s instructions, until the blade stops. Then transfer to a freezable container, cover and freeze for 4 hours, or overnight.
To make without a machine, pour the mixture into a shallow, wide freezable container and freeze for 1 hour, until the mixture freezes in a border around the edge. Break up the ice crystals with a whisk and return to the freezer. Repeat this whisking every 30 minutes, until evenly set and too thick to whip. This should take about 3 hours in total. Cover and freeze undisturbed for 4 hours, or overnight.
Soften the ice cream in the fridge until soft enough to scoop, about 15 to 20 minutes, before scooping. Serve with fresh cherries or, when they aren’t in season, frozen or canned cherries simmered in a covered pan for 15 minutes with a splash of water and a little maple syrup, to taste.
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