Mycelium is the vegetative part of a mushroom. Mycelium is an extremely compliant non-homogeneous biopolymer that is being developed locally by Ecovative LLC as a biodegradable replacement for Styrofoam. As part of a collaborative research project between Ecovative LLC, Union College, and RPI that is being funded by the National Science Foundation; the physical properties of this material are being evaluated for various growing conditions. Because of the compliant nature of the material standard test methods can not be employed. Union College researchers have been tasked with developing test methods that will accurately characterize biopolymers when subjected to tensile and compressive loading. This presentation describes the development of the tensile test method developed to evaluate boipolymers. The analytical evaluation of the test fixture design using the Finite Element Method (FEM) is discussed, the procedures for test specimen preparation are described, and the experimental evaluation of the final test method configuration using the Digital Image Correlation (DIC) technique is reviewed. The method minimizes the stresses associate with the griping of the specimen eliminating grip failures that have plagued other attempts at testing biopolymers in tension. The test results also show the material to be anisotropic and inhomogeneous. The use of the DIC method has also enabled the characterization of Poisson's Ration for biopolymers.