Combine milk, baking powder, and 1 T flour in a bowl and set aside.
Place hazelnuts, 4 T flour, and spices in the food processor and grind until it looks like cornmeal. Pour into the other bowl and set aside.
Dip a piece of seitan into the milk, then the hazelnuts, turning to coat completely. Set on plate and repeat with remaining seitan.
Set the seitan next to the stove as you heat oil over medium high heat. When it’s hot, add seitan and fry about 2 minutes, until golden. Flip and fry the other side.
Serve hot with mashed potatoes and gravy.