White Pepper vs. Black Pepper: One Berry, Two Ways of Processing It

Same berry, two very different jars. White and black pepper both come from Piper nigrum: black pepper is the whole berry dried with its outer layer on, and white pepper is the berry with that layer removed.¹ Taking it off strips out much of the volatile oil, so white pepper is the less aromatic of the two.² Which one’s hotter? That depends on which source you ask, and America’s Test Kitchen’s tasters had a surprise or two.

Side by side

The essential-oil figures come from different sources and describe different things (Katzer’s whole white pepper, Britannica’s ground black), so they show direction, not an exact gap. The piperine row compares like with like, but those are minimums a graded lot has to meet, not measurements of what’s on the shelf.

How each is made

Both start on the same vine. ATK explains the split. Black pepper is made from unripe berries dried until their skins blacken. White peppercorns are fully ripened berries soaked in water to ferment, and stripping the skin removes much of the volatile oils and aroma compounds.² AramcoWorld quotes Ibn Battuta describing berries spread in the sun until they “are thoroughly dried and become black,” and spice author Ian Hemphill explaining that an enzyme in the skin turns them black.⁵ Britannica adds that white pepper can also be made by grinding off the outer coating mechanically.⁴

You’ll often read that white pepper made under running water is cleaner than pepper soaked in standing water. We found no source that compares the two methods.

Which is hotter?

The sources disagree, so here are both sides:

Part of it may be what each source means by “hot.” Piperine, the main pungent compound in pepper, survives in the white kernel, while much of the aroma leaves with the skin.²³ A taster can read a more aromatic pepper as stronger. We found no study that measures piperine in white and black pepper from the same lot.

Flavor beyond heat

Black pepper’s aroma comes from its essential oil, about 90 percent monoterpene and sesquiterpene hydrocarbons.⁶ Katzer rates black and green peppercorns as more aromatic than white, and says the soaked-off outer flesh carries part of the volatile aroma compounds.³

Less aroma doesn’t mean less character. In ATK’s hot and sour soup test, tasters preferred the white-pepper soup for its “floral, earthy flavor and greater complexity.”² So the idea that white pepper is just the duller of the two doesn’t hold for every dish. That earthy note has a limit, though. Katzer warns that white pepper kept too long develops skatole, which gives a disagreeable, fecal flavor, and can pick up a moldy taste that spoils a meal.³

Where each one goes

White pepper. Katzer says it’s often suggested for cream-based sauces where black pepper could spoil the color, and whenever pungency matters more than pepper flavor. Ground white pepper also suits last-minute seasoning. He notes that East Asian cooks often prefer white pepper, and that its mildly aromatic pungency is popular in Japan.³ Use it in mashed potatoes, cream soups, pale fish dishes and Chinese hot and sour soup.

Black pepper. Grind it over food at the table, crack it for a steak crust, and use it anywhere the aroma is the point, like cacio e pepe. See black pepper and cracked vs. ground black pepper.

Can one stand in for the other?

Usually, with two catches: color, and how much pepper the dish uses. The amounts below come from our black pepper substitutes and white pepper substitutes pages and keep their labels. Attributed quotes a named source. Method marks our own starting point.

White in place of black. Better Homes & Gardens gives 1/2 teaspoon of ground white pepper for 1/2 teaspoon of black.⁷ White pepper replaces the bite better than the aroma, so pepper-led dishes like steak au poivre will taste noticeably different.

Black in place of white. ATK found that in a stir-fry with a small amount of pepper, tasters had a hard time telling the two apart. With a larger amount in hot and sour soup, the difference was clear, and ATK doesn’t recommend swapping in black for a recipe that leans on a fair amount of white pepper.² A widely repeated tip says to use more black pepper when replacing white because white is hotter. ATK’s tasting points the other way. In a pale sauce, black pepper also leaves dark specks.

Price and keeping

Katzer says white pepper costs significantly more than black, partly to make up for growers’ higher risk of losing a harvest to weather while the berries ripen on the vine.³ We found no dated price comparison.

No regulator or standards body gives a shelf life for either. Katzer’s warning about skatole in white pepper kept too long is your practical guide: buy white pepper whole, in amounts you’ll actually use, and smell it before you cook with it. Black pepper fades too. Katzer says few spices go downhill as quickly as ground pepper.³ For both, buy whole and grind as you need it.

What isn’t known

• No study measures piperine in white and black pepper made from the same lot, so which is hotter is still disputed.
• No source compares soaking methods for white pepper.
• No dated price comparison.

Related

• Black pepper, white peppercorns, green peppercorns
• Black pepper substitutes, white pepper substitutes, too much pepper
• Tellicherry pepper vs. black pepper, peppercorn medley vs. black pepper, cracked vs. ground black pepper