In a small saucepan, combine the oat milk and 1/4 cup water and place over medium low heat
Whisk together arrowroot powder with the remaining 1 tbsp water then add to the saucepan. Continue to cook stirring occasionally until thickened (about 3 minutes)
Pour oat milk mixture into blender and add ackee, peanut butter, sugar, bitters and cinnamon and nutmeg if using
Blend until completely smooth, taste and add more sugar if desired
Pour into popsicle molds and freeze overnight till solid
Once completely frozen, remove from mold and lay on a sheet of parchment paper on a tray or plate in the freezer while you make the chocolate coating.