Liquid First: Begin by pouring 2 tbsp of milk into the blender first. Keep another tbsp ready for adjustments. If using two thickeners, pour 3 tbsp of milk into the blender, keeping additional liquid ready to add if needed.
Add the Thickeners: Layer in your chosen thickeners (yogurt, avocado, etc.)
The Frozen Layers: Add the frozen berries and the frozen banana.
Blend: Begin by pulsing the blender or use the “chop” or “frozen” settings, if your blender has them, for 30 seconds to break up the frozen fruit. Pause to scrape down the sides or shake the blender to help the mixture settle and make contact with the blades.Then, continue blending on low or pulse for 30 seconds. Stop to scrape the sides again. If the mixture is too thick and chunky, add another tablespoon and blend for another 30 seconds until it becomes smooth and velvety.1 Serve: Scoop into a bowl, smooth out the top with the back of a spoon, and add your toppings in neat rows for that "café look."