Black cumin oil may appear to be simply another unassuming bottle among a sea of other bottles on a busy shelf, but it is far from dull. This is the small show-off of the health world, a small gem with centuries of history and more personality than your eccentric aunt at a wedding party. It has history, charisma, and a taste so strong it almost commands a round of applause. Whether you’re a curious gourmand or someone who believes “self-care” equates to a second piece of cake, black cumin oil has something to say to you.…