Does any blender also do up-down shaking movement? I have a blender. When I try to blend vegetable, I need to hold the blender, shake the blender up and down to make sure the blade cut the vegetable. Does any blender do all for me?
Yes, that is completely normal while trying to blend solids. It's just that the vortex/space doesn't allow for the large chunks of veg to fall onto the blade. Try a food processor.