Compatible with Toddy® OS Paper Filter Bags | The Toddy® Home Cold Brew System is our original cold brew pioneer, a nonelectrical coffee maker that produces a smooth, rich liquid concentrate used to make unparalleled cold brew at home. By allowing time to replace heat, Toddy's deceptively simple cold water filtration process extracts the coffee bean's true delicious flavor, leaving behind much of the undesirable bitterness. Concentrate brewed in the Toddy® Home Cold Brew System is the perfect foundation for delicious iced and blended frozen drinks. Our versatile BPA-free system can also be used to cold brew artisanal tea.