Add liquids first. Pour your milk into the blender jar. This helps the blades catch the solids for a smoother blend.
Layer the soft ingredients. Add the avocado, banana (if using), vanilla, lemon juice, and sweetener. These blend quickly and form the creamy base.
Add the blueberries and extras. Toss in the blueberries, chia or flax, and a pinch of salt.
If you’re using fresh blueberries, add a few ice cubes for a colder, thicker texture.
Blend until silky. Start on low, then increase to high. Blend for 30–45 seconds, or until the color is uniform and the texture is smooth with no visible flecks.
Taste and adjust. If it’s too thick, add a splash more milk. If you want it sweeter, add a bit of honey or maple and blend again.
Serve immediately. Pour into a chilled glass.
For a little flair, top with a few extra blueberries or a sprinkle of chia.