Ononis Spinosa

Ononis spinosa is a plant belonging to the family Fabaceae, that is commonly known as spiny restharrow or just restharrow. It is found throughout much of Europe but seldom as far north as ScotlandIn medieval Russia, it used to be used for manufacturing Bulat steel. Though the original process is now lost, it is known it involved dipping the finished weapon into a vat containing a special liquid of which spiny restharrow extract was a part (the plant’s name in Russian, stalnik, reflects its historical role), then holding the sword aloft while galloping on a horse, allowing it to dry and harden against the wind.

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