I need a grain. Preferably barley. The barley must be sprouted i.e. malted by soaking and rinsing the husks in cool rainwater (assuming it rains) saving half of it for gruel, and half pressed into biscuits and baked at a long low temp (perfect for campfire coals) . Both the sprouted gruel and the half baked biscuits are spooned into a wood or stone lined trough and mixed, as hot rocks are dropped strategically into the mixture.Refer to picture above- this is neolithic style mashing!