In the high-speed blender, add the frozen banana, berries and 1 tablespoon of almond milk.
Add the acai powder if using and a sachet of stevia if you want to make it sweeter.
(The berries I used were sweet enough for the recipe; so decide if you need extra sweetening agent)
Blend well until the mixture is creamy. Add coconut cream at this stage and blend or process again.
Pour the mixture in a bread pan or a freezer safe box.
Freeze it for two to four hours.
Scoop in a cone and enjoy.