You may have heard of Buckwheat, perhaps in a Japanese Restaurant while ordering a plate of Soba noodles. Buckwheat hulls are dark outer shell of the buckwheat husk and are ideal as a weight bearing cushion filler due to their durability and strength. It is also noted that due to the amount of air circulating in and around the buckwheat husks, and as they do not collapse underweight, these air pockets allow for a lower degree of body heat to be absorbed by the cushion, making for a much cooler and comfortable meditation session.
The plant is an ideal weed redundant due to its fast growth season and is a successful wheat alternative in Japan, Tibet and China due to its ability to grow in harsh environments. If you are in Japan and looking for an authentic Soba Noodle experience you cannot miss the town of Izushi, in the Hyogo Prefecture. Buckwheat flour is used more commonly in the West as an alternative for wheat allergies and make a lovely nutty flavoured pancake, however consider using more milk, or in the case of bread, water when using buckwheat flour due to its high absorbancy rate. Buckwheat Crepes with blue cheese and a glass or white wine are just about the most perfect combination either in France, or if you can find an authentic Crepery. This delicacy is also shared in Russia, and is known as blinis.
In Japan buckwheat husks have been used for many years to fill the tradition zafu cushion. Lilliane Wilde meditation cushion have used 100% Buckwheat husks for filling for 8 years and cushions that have been used daily during this time have not required re-filling.