It certainly looks like buckwheat honey to me. Buckwheat has a very strong flavour. Some have likened it to molasses, others say it has a "barnyard flavour." I always thought it had a sort of "ripe hay" flavour to it & maybe just a hint of molasses. I've got a few pounds of it in the cupboard, waiting to be mixed with some clover honey & fermented.
Regards, GF.