For a quick clean: Rinse the blender of any thick liquids. Combine warm water and dish soap in the jug of the blender. Add the lid, then blend on medium high for 30 seconds. Rinse out the soup. Remove any remaining residue with a sponge. Rinse well and dry.
For a deep clean: Add lemon juice, baking soda and water to the blender jug. Blend on high speed for 30 seconds. Remove the jug from the base and scrub the interior with a sponge. Rinse well and dry.