Place buckwheat kernels in a bowl, cover with water and allow to soak overnight. Rinse and drain well. Transfer kernels to a food processor or high-speed blender. Add remaining ingredients and process until fairly smooth. Serve mixture as a raw pate or dip, or spread into a de-stemmed collard leaf and roll up burrito-style. Otherwise, form mixture into patties of desired size and transfer to a dehydrator until patties form a uniform crust. This may take 3+ hours depending on size of patties and make/model of dehydrator.