Blender system

A blender for blending ingredients from a container with a fluid, the container having a receptacle cup with a closed end and a receptacle opening opposite the closed end and surrounded by a lip, a cover being affixed to the lip across the receptacle opening to enclose the ingredients therein, the container having a height from the closed end to the lip, the blender comprising:

• a bottle comprising:
• a chamber comprising an opening to receive the fluid, and
• a shoulder about the opening;
• a lid configured to couple with the bottle, the lid comprising a container receiver, wherein the container receiver is configured to receive the container containing the ingredients closed end first and position the receptacle opening with the cover 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 receptacle opening with the cover, and wherein the container receiver has an inner discharger surface that is configured to contact and apply pressure to the closed end of the container while the shoulder holds the lip stationary and wherein the lid is coupled to the bottle such that the discharger surface can advance closer to the shoulder to a distance less than the height of the container so as to displace the closed end relative to the lip to thereby open the cover and permit discharge of the ingredients from the container into the chamber.