Difference Between Herbs and Spices
Herbs are the fresh or dried leaves of plants, typically from temperate climates (basil, oregano, parsley, mint). Spices come from other plant parts - seeds, bark, roots, or fruit - usually from tropical regions (cinnamon from bark, pepper from berries, cumin from seeds, ginger from root). Some plants provide both: cilantro leaves are an herb, while its seeds are the spice coriander.
Key Takeaways
- The botanical distinction is simple: herbs come exclusively from the leafy green parts of plants.
- Some plants give both: coriander/cilantro, dill weed/dill seed, fennel fronds/fennel seeds.
- Garlic is technically neither - it's a vegetable (bulb), though often grouped with spices.
Explanation
The botanical distinction is simple: herbs come exclusively from the leafy green parts of plants. Common herbs include basil, oregano, thyme, rosemary, parsley, cilantro, mint, and dill. Most culinary herbs originate from Mediterranean or temperate climates and can often be grown in home gardens.
Spices come from non-leaf parts of plants: seeds (cumin, mustard, fennel), bark (cinnamon), roots/rhizomes (ginger, turmeric), fruit (black pepper, vanilla, cardamom), or flower parts (saffron, cloves). Most spices originate from tropical regions - the historic spice trade routes connected Asia, Africa, and Europe.
In cooking, herbs are often added late or used fresh to preserve delicate flavors. Spices, being more concentrated and robust, are typically added early and cooked into dishes. Dried herbs are more concentrated than fresh (use 1/3 the amount). Spices should be toasted or bloomed in oil to release their essential oils.
The global spice trade shaped world history for millennia. Black pepper, once worth its weight in silver, drove European exploration of sea routes to Asia in the 15th century. Saffron remains the world's most expensive spice at $5,000-$10,000 per pound because each crocus flower produces only three tiny stigma threads, and it takes roughly 75,000 flowers to yield one pound. Vanilla is the second most expensive, requiring hand-pollination and months of curing.
Fresh herbs lose potency quickly after harvest. Basil wilts within 2-3 days at refrigerator temperatures and turns black from cold damage. Hardy herbs like rosemary and thyme last 1-2 weeks refrigerated wrapped in a damp paper towel. Whole spices retain flavor for 3-4 years when stored in airtight containers away from heat and light, while ground spices lose potency within 6-12 months as their volatile oils evaporate. Buying whole spices and grinding them fresh yields noticeably stronger flavor.
Things to Know
- Some plants give both: coriander/cilantro, dill weed/dill seed, fennel fronds/fennel seeds.
- Garlic is technically neither - it's a vegetable (bulb), though often grouped with spices. Zest from citrus peel is another flavor element that blurs the herb/spice line.
- Bay leaves are herbs but used more like spices - added early and removed before serving.
- Salt and pepper are called spices colloquially, but salt is a mineral, not plant-derived.