Soup thickeners are ingredients used to add body and texture to soups and stews. Common soup thickeners include OKRA (4 letters), which is a vegetable with a slimy texture that helps thicken liquids; AGAR (4 letters), a gelatinous substance derived from seaweed; roux (4 letters), a combination of fat and flour cooked together; TAPIOCA (7 letters), a starch made from the cassava root; cornstarch (10 letters), a powder made from corn that thickens when heated; and FILE (4 letters), a powder made from sassafras leaves.