A coffee brewer for making coffee may include a receiving container for receiving the brewed coffee, an exterior container being detachably mounted on the receiving container, and an interior container to cooperate with the exterior container. The interior container may rotates with respect to the exterior container. The interior container may include an exterior surface having a male thread. The exterior container may include an interior surface having a female thread to cooperate with the male thread of the interior container. The exterior container may include substantially a cylinder. The interior container may include substantially a cylinder.