An improved dried lavender processing apparatus and method comprises a multi-module system comprising a first de-stemmer unit that receives the dried lavender in bundles, separates the buds from the stems and leaves, collects the stems and leaves as waste, and provides the buds to a second separatorclassifier unit. The machinable glass-ceramics of the invention have a dielectric constant of <8 at 25\xb0 C. The device is a normally off E mode device and is turned on by applying a positive voltage to the floating gate to modify the depletion layer and reinstate the 2-DEG layer.