Assemble all the ingredients first. Then take a small saucepan, and add the uncooked buckwheat groats in order to toast them properly over medium-high heat for about 4 - 5 minutes. You need to toast it until it smells fragrant and begins to pop. Give it a stir often to not let it burn and turn black.
Next, you have to carefully add water. It will start to boil immediately because you are adding water to an extremely hot pan.
Now, reduce the heat and let it simmer for 5 - 10 minutes. Make sure that the buckwheat is soft and cooked, and that the water has developed a light brown color.
Take a fine mesh and carefully strain the toasted buckwheat through it right into the mug. If you do not prefer a cloudy tea, line the sieve with a paper towel or a coffee filter. Also, do not allow the buckwheat to sit in hot water for a very long time as it has an absorbing ability, so most of the water will be absorbed.
To add taste, stir in the maple syrup or honey.
Serve immediately and enjoy!