Coriander Seed
What it is
The dried, ripe fruit of Coriandrum sativum — the same plant whose fresh leaves are cilantro (called "coriander" outside North America). The seeds are small, round-to-oval, ridged, beige-to-tan, and lighter and more hollow than they look.
How it's made
The plant is allowed to flower and set seed; the umbels are cut, dried, and threshed. Sold whole or ground.
Flavor profile
Here is the great surprise: coriander seed tastes almost nothing like cilantro leaf. The leaf is dominated by aldehydes (which some people, for genetic reasons tied to the OR6A2 receptor, perceive as soapy); the seed is dominated by linalool, giving it a warm, citrusy, floral, gently sweet and nutty character with no soapiness at all. Toasting amplifies the citrus and nuttiness. Whole seeds are easily crushed; ground coriander is a workhorse but fades.
Culinary uses
A backbone spice of curry powder and garam masala, Middle Eastern and North African blends (dukkah, harissa, baharat), Latin American recados, pickling spice, and the European brewing tradition — coriander is a classic flavoring in Belgian witbier. Pairs naturally with cumin (the two are a near-universal duo), citrus, and chile.
Regional variations
Indian coriander seed tends to be larger and milder; Eastern European and Moroccan types are smaller and more intensely citrus-floral.
Cultural & historical context
Among the oldest cultivated spices — coriander seeds were found in Tutankhamun's tomb and named in Sanskrit and biblical texts. It spread westward into Europe (where the seed, not the leaf, became the familiar form) and eastward into the foundations of Indian cooking. The leaf-versus-seed split is a perfect teaching case in how the same plant can yield two flavors with no resemblance — and why a cilantro-averse cook can still love coriander seed.
Reference notes
Tags: `Whole`, `Ground/Powdered`, `seed spice`, `Apiaceae`, `dual-use plant`. Model coriander seed and cilantro leaf as two products of one plant with divergent flavor — and add a `cilantro-soap-gene` educational note. Related ingredients: Cumin, Fennel, Cilantro (leaf). Related cuisines: Indian, Belgian (brewing), Middle Eastern, Mexican. Suggested links: → Cumin, → Cilantro, → Curry Powder, → Dukkah.