In a bowl, pour 2 cups of raw buckwheat groats and 4 cups of water. Soak for at least 1 hour or overnight. After soaking, rinse well in a strainer several times.
Place buckwheat groats in food processor or blender, along with the almond milk, chia seeds, and vanilla. Process until combined and slightly smooth. Now add in the sweetener and cinnamon to taste (I found 1/4 cup of sweetener was enough, but others might like a bit more or less than that).
Scoop into bowls or parfait glasses and add your desired toppings and mix-ins. Serve immediately cold. Place leftovers into fridge and enjoy for the next few days.