Glossary

Every term used on the site, defined — from adulteration to zest

From herbsandspices.food, the reference guide to herbs and spices

🕑 History Last edited 2026-09-24 👁 3 views #definitions#glossary#reference#terminology

An alphabetical glossary of herb and spice terms: botany, chemistry, cooking technique, trade words and the British and American names that differ, with links to full articles.

How to use this glossary

Herbs and spices borrow vocabulary from botany, chemistry, the spice trade and a dozen cuisines at once. This glossary collects the words that turn up across the site, with a link to the full article where there is one.

Terms in bold within a definition have entries of their own. British English is used throughout; American equivalents are noted where they differ.

A–Z

A

Adulteration
Bulking out or disguising a spice with something cheaper or undeclared — brick dust in chilli, dyes in turmeric, papaya seeds in black pepper. See spice adulteration.
Ajwain
The small, ridged, thyme-scented fruit of Trachyspermum ammi, used in Indian breads, pakoras and pickles. Also called carom. See ajwain.
Allspice
A single spice: the dried unripe berry of the Caribbean tree Pimenta dioica, named for smelling like a mixture of cinnamon, cloves and nutmeg. Not the same as mixed spice. See allspice.
Annual
A plant that completes its life cycle in one growing season — basil, coriander and dill among the herbs. See annual and perennial herbs.
Apiaceae
The carrot or parsley family, formerly Umbelliferae. It supplies more spices than any other: cumin, coriander, fennel, caraway, dill, ajwain, anise, celery seed and asafoetida, plus parsley, chervil and lovage.
Aril
A fleshy covering that grows around some seeds. Mace is the red aril around the nutmeg seed. See mace.
Aromatics
Vegetables and herbs cooked at the start of a dish to build its base: onion, garlic, ginger, celery, lemongrass and the like.
Asafoetida
The dried resin of certain Ferula species, pungent raw and oniony once fried. Sold as hing, usually diluted with wheat or rice flour. See asafoetida.

B

Bloom
To fry ground spices or pastes briefly in fat so that their fat-soluble aroma compounds are released into the oil. See blooming spices in oil.
Bouquet garni
A tied bundle of herbs, classically parsley stalks, thyme and bay, simmered in a stock or stew and removed before serving. See bouquet garni.
Bruise
To crush lightly — a lemongrass stalk, a cardamom pod, a sprig of mint — so that it releases flavour without breaking up.

C

Capsaicin
The main compound responsible for the heat of chillies; it acts on the TRPV1 receptor that also senses painful heat. See capsaicin.
Capsaicinoids
The family of related compounds, including capsaicin and dihydrocapsaicin, that together make chillies hot. Scoville ratings measure their concentration.
Capsicum
The chilli genus, in the nightshade family Solanaceae. The five domesticated species are C. annuum, C. chinense, C. frutescens, C. baccatum and C. pubescens. Also the Australian and Indian name for a sweet pepper.
Cassia
The bark of Cinnamomum cassia and related species: thicker, harder and more pungent than true cinnamon, and much higher in coumarin. See cassia.
Chaat masala
A sour, salty north Indian sprinkle built on amchur, cumin and black salt. See chaat masala.
Chiffonade
Leafy herbs such as basil or sorrel rolled up and cut across into fine ribbons. See chopping herbs.
Chile
Spanish spelling, used in Mexico and the US Southwest and kept here in proper names such as chile de árbol.
Chili
American spelling, kept on this site for chili powder (the US blend) and chili con carne. See chili powder.
Chilli
The fruit of a Capsicum plant, fresh or dried; plural chillies. The British spelling, used throughout this site.
Chinois
A fine conical sieve, used for straining infusions and sauces.
Coumarin
A sweet-smelling compound found in cassia and tonka beans, restricted in food in some countries because large regular intakes can harm the liver. See coumarin in cinnamon.
Cracked
Broken into a few coarse pieces rather than ground — cracked black pepper, cracked coriander seed.
Cultivar
A cultivated variety selected and kept for particular traits: 'Genovese' basil or the jalapeño, for instance.
Curing
The slow process of sweating and drying that develops flavour in some spices, notably vanilla, whose green pods have little aroma until cured. See vanilla.

D

Decorticated
Stripped of its outer husk or pod. Decorticated cardamom is the loose seeds without the green pods.
Deseed
To remove the seeds from a chilli. Much of the heat is actually in the pale placenta the seeds are attached to, so removing that too makes a bigger difference.
Dry rub
A mixture of ground spices, salt and often sugar rubbed on to meat or fish before cooking. See dry rubs and marinades.
Dry-roast
To heat whole spices in a dry pan, with no oil. Also called toasting. See toasting spices.

E

Essential oil
The volatile, aromatic oil distilled from a plant. Concentrated and not interchangeable with the spice itself; some are hazardous to swallow.

F

Fines herbes
The French mixture of finely chopped fresh parsley, chives, tarragon and chervil. See fines herbes.

G

Garam masala
A north Indian blend of warming spices, usually added near the end of cooking. Garam means warm or hot; masala means a mixture of spices. See garam masala.
Ghee
Clarified butter cooked until the milk solids brown lightly; a common fat for tempering spices in South Asian cooking.

H

Heat
The burning sensation caused by capsaicinoids (chillies), piperine (pepper) or isothiocyanates (mustard, horseradish, wasabi). Not a taste but a pain signal.
Hing
The Hindi name for asafoetida.

I

Infusion
Flavour drawn into a liquid by steeping — oil, vinegar, cream, syrup or water. See infusing oils.
Isothiocyanates
The sharp, nose-clearing compounds released when mustard seed, horseradish and wasabi are crushed and wetted. See mustard oils.

K

Kala namak
Indian black salt: a mineral salt with a sulphurous, eggy smell, pinkish-grey when ground. Essential to chaat masala.

L

Lamiaceae
The mint family, formerly Labiatae: mint, basil, thyme, rosemary, sage, oregano, marjoram, savory, lavender, shiso, lemon balm and hyssop. Most have square stems and aromatic leaves.
Landrace
A traditional local variety of a crop, adapted to its region over generations rather than bred formally.

M

Makrut lime
Citrus hystrix, whose double-lobed leaves and knobbly zest are used in Thai and Southeast Asian cooking. See makrut lime leaves.
Marinade
A seasoned liquid or paste — often with acid, oil or yoghurt — in which food is left before cooking.
Masala
A mixture of spices, dry or wet, in the languages of South Asia.
Masala dabba
The round steel spice tin, with small bowls inside, that sits by the stove in many Indian kitchens. See masala dabba.
Mericarp
One half of a split schizocarp: each 'seed' of cumin, fennel or caraway is botanically a mericarp.
Mixed spice
The British sweet baking blend — cinnamon, nutmeg, allspice, cloves, ginger and often coriander. See mixed spice.
Mortar and pestle
The bowl (mortar) and club (pestle) used to pound spices and pastes. See pestle and mortar.
Myristicin
An aromatic compound in nutmeg and mace that contributes to their toxicity in large doses. See nutmeg toxicity.

O

Oleoresin
A concentrated extract of a spice made with a solvent, containing both its aroma and its pungent or coloured compounds. Widely used by food manufacturers.

P

Panch phoron
The Bengali mixture of five whole seeds: cumin, fennel, black mustard, nigella and fenugreek. See panch phoron.
Perennial
A plant that lives for more than two years: rosemary, thyme, sage, mint, chives, lovage. See annual and perennial herbs.
Pericarp
The wall of a fruit. In a peppercorn, the dark wrinkled outer layer that is removed to make white pepper.
Piperine
The alkaloid that gives black pepper its bite. See piperine.
Placenta
The pale spongy tissue inside a chilli to which the seeds attach; where most of the capsaicin is made.
Pungency
Sharpness or heat, as opposed to aroma. In the chilli trade, a technical term for measured heat.

Q

Quill
A rolled stick of cinnamon bark. True cinnamon is sold in thin, many-layered quills; cassia forms a single thick curl.

R

Rhizome
An underground stem that grows horizontally. Ginger, turmeric and galangal are rhizomes, not roots.
Rub
See dry rub. A wet rub is the same mixture loosened with oil or another liquid.

S

Sanshool
Hydroxy-alpha-sanshool, the compound in Sichuan and sansho pepper that produces a tingling, numbing sensation on the lips and tongue. See sanshool and tingling.
Schizocarp
A dry fruit that splits into two or more one-seeded parts. The 'seeds' of coriander, cumin, fennel, caraway and dill are schizocarps or their halves.
Scoville heat unit (SHU)
The unit of chilli heat. Originally a dilution taste test devised by Wilbur Scoville in 1912; now usually calculated from capsaicinoid content measured by liquid chromatography. See the scoville scale.
Solanaceae
The nightshade family: chillies, sweet peppers, tomatoes, potatoes and aubergines.
Sprig
A small stem with leaves attached — of thyme, rosemary or parsley. Roughly 5–8 cm in a recipe that does not say otherwise.
Stigma
The part of a flower that receives pollen. Saffron is the dried stigmas of Crocus sativus, three per flower, picked by hand. See saffron.
Superhot
Informal name for the hottest chillies, generally those well above about 1,000,000 SHU, such as the ghost pepper and Carolina Reaper.

T

Tadka
See tempering. Also tarka, chhaunk or baghar, depending on the region.
Tempering
Frying whole or ground spices in hot fat to release their flavour, then adding the fat and spices to a dish, at the start or as a finishing flourish. See tempering spices.
Terpenes
A large family of aroma compounds, including limonene (citrus), linalool (coriander seed, basil) and pinene (rosemary, juniper). See aroma compounds.
Toasting
Heating whole spices, seeds or nuts in a dry pan or oven to drive off moisture and deepen their aroma. See toasting spices.
TRPV1
The heat- and pain-sensing receptor in nerve endings that capsaicin activates, which is why chilli feels hot. See capsaicin.

U

Umbellifer
Any plant of the Apiaceae family, named for its umbrella-shaped flower heads (umbels).

V

Volatile oils
The fraction of a spice's flavour that evaporates readily and carries its aroma. It is what fades first in an old jar. See how long spices last.

W

Whole spice
A spice as harvested and dried, before grinding — seeds, pods, bark, berries. Keeps its aroma far longer than ground. See whole vs ground spices.

Z

Zest
The coloured outer layer of citrus peel, where the aromatic oils are. The white pith beneath it is bitter.

British and American names

British American Notes
Coriander (leaf) Cilantro See coriander
Coriander seed Coriander See coriander seed
Chilli, chillies Chile, chili, hot pepper See chilli pepper
Chilli powder Ground chile, cayenne Plain ground chilli
— Chili powder A blend; see chili powder
Pepper (sweet), capsicum Bell pepper
Aubergine Eggplant
Courgette Zucchini
Spring onion Scallion, green onion
Mixed spice Pumpkin pie spice (near equivalent) See mixed spice, pumpkin spice
Hob Stovetop
Grill Broiler Heat from above

See also

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