Black Sesame Seed

Black sesame seeds are unhulled seeds of Sesamum indicum—the same species as white sesame, but with the dark outer coat left intact. That hull is where the seed earns its name: it carries the deep black pigment, an earthy bitterness, and a disproportionate share of the seed's calcium, iron, and antioxidant content. Stripped of the hull, the seed inside is pale and mild; left whole, it tastes flat and slightly soapy until heat transforms it.

In the kitchen, black sesame behaves more like a spice than a neutral seed. Two to four minutes in a dry pan over low heat drives off the raw quality and releases a nutty, toasty aroma, though the window between fragrant and burnt is narrow because the dark hull hides scorch. Once toasted, the seeds go three ways: whole as a garnish on rice, noodles, and tofu; ground with sugar into the dense paste that fills Chinese tang yuan and mooncakes; or pressed cold into the dark, aromatic finishing oil used as a final flourish across East Asian cooking.

Storage deserves more attention here than with most seeds. The unhulled seed's exposed surface and high oil content make it prone to rancidity—faster than hulled white sesame—so buy in small quantities, keep it airtight, and refrigerate or freeze anything you won't use within a month or two. Light is the other enemy; UV breaks down the oils and the seeds turn stale in clear jars on a sunny shelf.