container and at least one protrusion protruding from the bottom surface of the cap application_number US 201113160161 A description the invention is a hand mixer for mixing liquid mixtures such as foods or pharmaceuticals omelet mixes protein shakes powdered medicines dissolved in aqueous solutions and the like other uses contemplated for the invention include 1 a batter mixer for pancakes crepes waffles etc 2 an emulsifier for baby food fish and shellfish batter mixer prior to frying etc 3 a paint mixer for example for mixing different paint colors making a paint and glaze mixture etc the foregoing list of uses for the invention is meant to be regarded as illustrative rather than limiting and it should be understood that the invention is intended to be used in making any sort of liquid mixture resulting from a combination a liquid with other liquids powders solids etc as shown in the exemplary embodiment in fig1 the invention includes a container 1 which can be rigid or flexible and can be made of plastic glass metal wood clay rubber or any other material or combination of materials known in the art the container 1 has an opening 2 through which the substances to be mixed can be placed into the container 1 the invention further includes a cap 3 or lid which covers the opening 2 of.