Compression/explosion processing was a rapid and efficient method of making molded starch-based foam. The physical and mechanical properties of starch products varied depending on the moisture content of the feedstock. Wheat and corn starch feedstock with low moisture content (≤11%) yielded products with very little expansion that did not fill the mold cavity and had a yellow, translucent appearance. Similarly, samples made of potato feedstock with 8% moisture content were solid bars with a well-defined shape. Feedstocks with higher moisture content produced foams that were white, opaque, and that expanded readily and completely filled the mold. The lower surface of the molded foam was generally well formed, whereas the upper surface was often irregular. When the moisture content of the feedstock was raised to 20% some material escaped along the edges of the mold cavity, but a molded sample of precise dimensions was produced