Chop the mushrooms up to be very small. The easiest is to put them in a food processor. Toss them with a bit of tamari, and let them sit while you get the buckwheat cooking.
Cook the buckwheat in 2 cups of water with a pinch of salt, bringing it to a boil then turning down to low to simmer for 10-15 minutes.
Once the buckwheat is cooked, stir it in with the mushrooms. Then mix in the rest of the seasonings.
Turn on the oven, toaster oven or BBQ to heat up to about 350 degrees You can do higher on the BBQ, just keep an eye on them since they’ll cook faster.
Put the mixture on a parchment-lined cookie sheet in burger shapes. Put in the oven at 350 degrees F, for about 40 minutes.