01 - Place the bananas, almond milk, raw cacao powder, and sweetener into a blender.
02 - Add chia seeds or flaxseeds, vanilla extract, and a pinch of sea salt if desired.
03 - Blend on high speed until the mixture is completely smooth and creamy, about 30 to 60 seconds.
04 - Taste the shake and adjust sweetness or cacao intensity to your preference.
05 - Pour into glasses and serve right away for the best texture and flavor.