PURPOSE: A method of making a functional snack by mixing rice flour with an extract of kelp and brown algae and then extruding it is provided. The snack product contains effective ingredient of seaweeds while having enhanced storage stability without the lowering of palatability. CONSTITUTION: Rice flour is mixed with 5% by weight of powder or an extract of kelp and brown algae and then extruded for 1 to 2min. Preferably the kelp and brown algae have a moisture content of 18%. The extruded snack of the seaweed extract exhibits better palatability than that of the seaweed powder.
