Add liquids first: Pour the milk into the blender. This helps the blades catch and blend smoothly.
Layer the rest: Add yogurt, berries, banana (if using), lemon juice, seeds, and a pinch of salt.
Sweeten lightly: Add honey or maple syrup if your berries are very tart.
Start small—you can always add more.
Blend until creamy: Start on low, then increase to high. Blend for 30–45 seconds, or until the texture is smooth and thick.
Adjust texture: If it’s too thick, add a splash more milk. If it’s too thin, add a few ice cubes or extra frozen berries and blend again.
Taste and tweak: Add another squeeze of lemon or a touch more sweetener if needed.
Serve right away: Pour into a chilled glass for the best texture and flavor.