Peel and freeze chopped banana.
Blend in food processor until creamy.
Stir in other ingredients if desired – cacao, shredded coconut, honey / stevia, blueberries, sultanas, cinnamon.
Wash, hull and freeze one punnet of strawberries.
Blend in food processor with 1-2 tablespoons sugar (unless sweet strawberries), then add one egg white (or juice of a small lemon or ¼ cup of cold water / almond milk / coconut cream) before blending again until creamy.