According to the invention, a pouring spout for mounting on a container's neck can be configured as a spout placed in the container's neck, which spout goes on the inside of the neck so that possible drops of liquid will be collected inside the neck. Drops of liquid running on the outside of the container are hereby avoided and at the same time it is achieved that the container can pour in all directions since the edge of the pouring spout extends uniformly around the container's neck.