Abstract: Liquid coffee extract having a solids concentration of from about 10 to 30% by weight is maintained at a temperature below about 70.degree. F for a period of time sufficient to permit precipitation of materials which interact with elemental iron. The tempered extract is clarified, such as by centrifugation, fortified with nutritive ingredients including a soluble iron compound containing assimilable iron, and dried, such as by spray drying.

Abstract: A novel process for extracting roasted coffee using split-extraction percolation techniques is disclosed comprising obtaining an autoclave coffee extract by passing aqueous extraction liquid through the autoclave section of the percolator set, splitting the autoclave extract into a product portion and a feed portion, obtaining an atmospheric coffee extract product from the atmospheric section of the percolator set by passing the feed portion of the autoclave coffee extract through the atmospheric section, and further processing the atmospheric coffee extract product and the product portion of the autoclave extract to obtain a dry instant coffee product.

Abstract: A coffee filter for a single percolation having an extraction chamber incing a support for supporting a pressed coffee tablet, and locating an underlying filter, a predetermined distance range from the bottom of the coffee tablet.