A blender for blending ingredients from a container with a fluid includes a bottle including a chamber with an opening to receive the fluid and a shoulder about the opening. The blender further includes a lid configured to couple with the bottle that includes a container receiver. The container receiver is configured to receive the container containing the ingredients and position the container against the shoulder when the lid is coupled to the bottle, wherein the shoulder is configured to have a shape and size to receive and seat the container. The container receiver is further configured to apply pressure to the container while the shoulder holds the container stationary to discharge the ingredients from the container into the chamber.