- Make sure you are adding water first. This is essential.
- Make sure you don’t add all the water initially. Like @DaveFrom1981 says, this allows room for mixing in the top of the shaker.
- Shake hard for around 10 seconds each time (20 seconds total). I never get lumps, but I don’t “shake it like a polaroid picture”, I shake it like I’m a bartender!
- Use the mesh, this will strain any lumps you might have so you don’t consume them.
If you are blending you should not get lumps.