Place buckwheat and quinoa in a large jar or bowl and cover with 2 cups of water. Allow to sit overnight or for at least 2 hours.Drain and rinse the grains then add them to a blender. Top with remaining ingredients (minus chia jam) and blend on high until smooth and creamy.To serve, place two tablespoons of jam in the bottom of two jars. Top each with half of the porridge, then garnish with your desired toppings. Serve immediately or store for up to one day.