Preheat oven to 350 F. On parchment-lined baking sheet, unfold out diced yam. Bake in preheated oven for about 15 minutes, or till tender when pierced with fork. Alternatively, steam in massive saucepan till tender. Take away to massive bowl and put aside to chill. Hold oven temperature at 350 F.
In massive skillet, warmth 1 Tbsp grapeseed oil. Sauté onion over medium warmth till smooth. Add to ready yam in bowl together with salt, pepper, garlic and bread crumbs. Mash combination collectively utilizing massive fork.
In small bowl, place flaxseed. Stir in 1 Tbsp water till flaxseed is absorbed. Stir in dietary yeast, Italian parsley and cilantro till blended. Add to yam combination, working in together with your arms till evenly distributed. Form combination into four evenly sized patties. Place on parchment-lined baking sheet. Brush with remaining 1 Tbsp grapeseed oil. Bake in preheated oven for 15 minutes, or till patties are crisp on the surface.
In the meantime, in bowl, gently fold collectively blackberry ginger salsa substances. Put aside.
When patties are completed as you want, take away and serve with beneficiant spoonfuls of salsa overtop.