Herb, Spice, or Seasoning? A Guide to How We Classify Flavor | Spice Library Record 004
Library Card
- Record Type: META-004 (Library Guide)
- Subject: Definitions and classification of Herb, Spice, and Seasoning
- Fields: Botany, Culinary history, Linguistics, Cultural anthropology
- Core question: Why does the same plant get called different things in different cultures?
- Short answer: Because the boundaries were never fixed to begin with.
Librarian's note: This is the key that unlocks every other record in the library. Read it slowly, with something warm to drink.
Welcome Back to the Spice Library
Three records in, a question is probably forming in your mind.
 |
| Herb |
Sage and rosemary are herbs. Salt is… what exactly? And why is black pepper a spice when basil is a herb, even though both go into the same pasta sauce?
These aren't trivial questions. The words herb and spice carry centuries of history — botanical, economic, and cultural — and the line between them has always been blurrier than most cookbooks admit. Add the Korean concept of yangnyeom, the Chinese system of thermal properties, and the Japanese idea of yakumi, and the picture gets richer still.
This record is the library's classification guide. By the end, you'll have a framework for every plant we cover — and a healthy suspicion of anyone who draws the boundary too cleanly.
Part 1 — The Western System: Leaf vs. Everything Else
The English-speaking world settled on a botanical definition:
Herb = the green, leafy part of a plant
Spice = everything else — seeds, bark, roots, flowers, fruit
 |
| Spice |
|
Herb |
Spice |
| Part used |
Leaf |
Seed, bark, root, flower, fruit |
| Texture |
Fresh, soft |
Dried, hard |
| Aroma |
Delicate, volatile |
Intense, stable |
| Heat tolerance |
Low — add at the end |
High — add at the start |
| Climate of origin |
Temperate (Europe, Mediterranean) |
Tropical (India, Southeast Asia) |
| Examples |
Basil, mint, parsley, dill |
Pepper, cinnamon, ginger, cloves |
Simple enough. Except the exceptions are everywhere.
Coriander is a single plant that produces both cilantro (the leaf — herb) and coriander seed (spice). In English, it even gets two different names depending on the part. In almost every other language, it's just one word for one plant.
Rosemary, thyme, and sage are technically herbs — they're leaves — but they behave like spices. Their flavor survives long cooking, their dried form is nearly as potent as fresh, and they can anchor a braise from start to finish. Culinary terminology calls these woody herbs, and they occupy a category of their own.
Fresh ginger reads like a herb — bright, clean, aromatic. Dried ginger powder is something else entirely: darker, earthier, almost medicinal. Same root. Two very different ingredients.
The leaf-vs-everything-else rule is a useful starting point. It is not a reliable map.
Part 2 — The History Behind the Words
Here is where it gets interesting.
In medieval Europe, spice was not a neutral culinary term. It was an economic category — and it meant luxury from the East.
To qualify as a Spice (capital S, socially speaking), a substance had to:
- Come from India, Southeast Asia, or China
- Travel thousands of miles along the Silk Road or by sea
- Be rare enough that a handful of black pepper could equal the price of a slave
- Be used exclusively by the aristocracy
Herbs, by contrast, grew in your garden or the field next door. They were free. Everyone had them. They carried no prestige.
This economic divide shaped the Age of Exploration. Columbus sailed west looking for spices. The Dutch colonized Indonesia for nutmeg and cloves. The Portuguese fought wars over the pepper trade. The entire geopolitical map of the modern world was partially drawn by the European desire for what we now buy in small jars at the supermarket for a few dollars.
When the trade routes opened and prices collapsed, spice lost its exclusivity — but it kept the name.
Part 3 — The Eastern Frame: Medicine Before Flavor
While Europe was building trade empires around spices, East Asia was operating from an entirely different premise.
In Chinese, Korean, and Japanese culinary tradition, the herb/spice distinction barely existed. The meaningful question was not which part of the plant but what does this plant do to the body?
China: Four Temperatures, Five Tastes
Traditional Chinese medicine classifies all food — and all flavor ingredients — by thermal property and taste:
Four temperatures (四氣):
- Cold (寒) — mint, chrysanthemum
- Cool (涼) — coriander
- Warm (溫) — fennel, cloves
- Hot (熱) — ginger, cinnamon, chili
Five tastes (五味), each associated with an organ:
- Sour (酸) — liver
- Bitter (苦) — heart
- Sweet (甘) — spleen
- Pungent (辛) — lungs
- Salty (鹹) — kidneys
A dish wasn't just seasoned for flavor. It was composed for balance. The same logic that makes a doctor ask about your constitution governs why certain spice combinations appear in certain dishes from certain regions.
Korea: Yangnyeom (양념)
The Korean word yangnyeom (양념) has no direct English equivalent. It means roughly all the ingredients added to make food taste right — and its scope is enormous: salt, soy sauce, doenjang, gochugaru, garlic, ginger, scallions, sesame oil, perilla leaves, fish sauce.
What unifies them isn't botanical category. It's the Korean philosophical principle yaksikdongwon (藥食同源) — medicine and food share the same root. Seasoning a dish and treating the body were not separate acts. They were the same act, done with the same ingredients.
Japan: Yakumi (薬味)
Yakumi (薬味) literally means medicine-flavor. These are the condiments and garnishes that accompany a dish — wasabi with sashimi, ginger with sushi, shiso with umeboshi — and their purpose is layered: flavor, yes, but also digestion, antibacterial protection, and seasonal harmony.
A wasabi root isn't just hot. It kills parasites in raw fish. A shiso leaf isn't just aromatic. It's also a natural preservative. The Japanese kitchen built function into its aesthetics.
Part 4 — The Same Plant, Seen Differently
Take coriander. One plant. Four completely different cultural readings.
English-speaking world: Leaf = cilantro (herb). Seed = coriander (spice). Different names, different uses, treated almost as different ingredients.
China: 香菜 (xiāngcài — fragrant vegetable). Leaf and seed are part of one plant. Thermal property: warm. Taste: pungent.
Korea: Gosu (고수) — largely unfamiliar until the Vietnamese pho wave in the 1990s and 2000s brought it into mainstream Korean food culture. Still a relatively recent arrival on Korean tables.
India: Dhania (धनिया). Leaves go into fresh chutney. Seeds go into curry. Ayurveda considers it cooling and digestive — opposite to the Chinese warm classification.
Same plant. Four frameworks. None of them wrong.
Or take garlic:
- Western cooking: bulb = spice (technically), but treated like a vegetable
- Korea: foundational yangnyeom — not herb, not spice, just essential
- China: 大蒜 (dàsuàn), warm-hot property, pungent taste
- Ancient Middle East: food of the pyramid builders — recorded in Egyptian texts as daily rations for construction workers
Part 5 — How This Library Classifies
Given all of the above, the Spice Library uses a flexible system:
HB (Herb) — plants where primarily the leaf is used
SP (Spice) — plants where seeds, bark, roots, flowers, or fruit are used
BL (Blend) — mixed preparations (curry powder, five-spice, za'atar)
Each record also notes:
- Eastern medicinal property (warm/cool/hot/cold), where relevant
- Names and uses across cultures
- Historical context — was this a luxury? A medicine? A daily staple?
The classification is a label, not a verdict. Coriander gets HB for its leaves and SP for its seeds. Ginger gets SP by definition and an asterisk noting it behaves differently fresh versus dried. Salt sits outside both categories — it earned its own record.
One practical rule worth remembering:
Soft herbs (basil, cilantro, dill, parsley, chervil, tarragon) — delicate, volatile, add at the end or use raw.
Woody herbs (rosemary, thyme, sage, oregano, lavender) — sturdy, stable, treat like spices.
Spices (seeds, bark, roots, dried) — add early, toast in oil if possible, let time work.
Closing the Jar
"Classification is a tool for convenience. The plants themselves have always moved freely across borders, cultures, and categories."
A spice in medieval Venice was a medicine in Tang dynasty China and a daily condiment in Korean cuisine. The same root that European traders risked their lives to source was growing in someone's garden outside of Delhi. The same leaf that gets two different names in English is one word in every other language.
This library records all of it — the botanical facts, the trade histories, the medicinal traditions, and the kitchen wisdom. Every record from here will carry its classification label. Every label comes with the acknowledgment that the plant didn't ask for it.
🔗 Also in This Series
Record 001 — Sage
Record 002 — Rosemary
Record 003 — Salt
Record 004 — Herbs, Spices & Seasonings
Record 005 — Pepper
Record 006 — Basil
This post covers historical and cultural information about herbs and spices. Traditional medicinal classifications are recorded as historical context only and do not constitute medical advice.
