Add whole milk, sugar, and instant coffee powder into a mixing bowl. Mix it well with the spatula.
Pour the mixture into a blender and blend at a medium speed until the sugar and coffee have dissolved.
Pour it out into a mixing bowl again and add heavy cream.
Stir gently until all ingredients are fully incorporated.
Place the mixture in the fridge. Let it chill for at least two hours.
Take the mixture out of the fridge and pour it into the ice cream maker. Churn the ice cream for half an hour.
Transfer the ice cream to an airtight container. Keep the container in the fridge again and let it freeze for at least four hours before serving.
