Five squares of chocolate in a row from pale white to dark, each on a small card with a percentage written by hand, beside a small pile of cocoa nibs, a pat of pale cocoa butter and a mound of sugar

What the Percentage on a Chocolate Bar Means, What It Does Not

The percentage on a chocolate bar is the most misread number in the fine food shop. Shoppers use it as a quality grade, a bitterness scale and a health score, and it is none of those. It is a statement about weight: what fraction of the bar came from the cacao bean. That is useful, and it is far less than people think. A 70 percent bar from one maker can be bright with red fruit and another can be flat and bitter, and both are honestly labeled. This page explains what the number measures, what the rest of the bar is, how milk, white and ruby chocolate fit the same arithmetic, and how to read the number together with the ingredients list, where the real information lives. Our bean-to-bar piece shows where each ingredient enters.

What the number measures

A cacao bean, once fermented, dried and roasted, is roughly half cocoa butter, the fat, and half cocoa solids, the dark, flavorful, non-fat part. Ground together they make chocolate liquor, which is not alcoholic and is simply the whole bean turned to paste. The percentage on the label is the share of the bar's weight that is cacao in any form: liquor, added cocoa butter, or cocoa powder. Everything else is sugar, plus milk in a milk chocolate, plus small amounts of emulsifier or vanilla if used. A 70 percent bar is, by weight, 70 percent stuff that was once a bean and 30 percent stuff that was not, and almost all of that 30 percent is sugar.

The arithmetic, by bar

Bar Cacao (solids plus butter) Sugar Milk solids What that means in the mouth
100 percent 100 0 0 Unsweetened chocolate liquor: intensely bitter, astringent, for cooking or the committed
85 percent 85 15 0 Very dark, low sugar; bitterness and fruit both prominent; the bar for people who like coffee black
70 percent 70 30 0 The craft standard: enough sugar to open the flavor, enough cacao that the origin shows
55 to 60 percent 55 to 60 40 to 45 0 "Semisweet": sweeter, softer, the baking-bar range
Milk chocolate, 35 to 45 percent 35 to 45 35 to 45 15 to 25 Creamy, mild; the cacao competes with milk and sugar for attention
Milk chocolate, mass-market, 10 to 30 percent 10 to 30 50 or more 15 to 25 Sweet first; the legal minimum in the United States is 10 percent liquor
White chocolate, labeled 30 percent 30, all of it cocoa butter, no solids 40 to 50 20 to 30 No cocoa solids, so no chocolate flavor; the percentage is fat

Two things the table makes plain. The percentage is mostly a sugar dial: as it rises, sugar falls, and that is the largest single reason a higher number tastes more bitter. And the percentage says nothing about how the cacao is split between solids and butter. A maker can add extra cocoa butter to a 70 percent bar, making it smoother and milder, or add none, making it more intense, and both are 70. This is why a percentage is not a bitterness scale even in principle.

Why two 70 percent bars taste nothing alike

Because the number describes quantity and everything that matters is quality. Inside that 70 percent are choices the label does not show: the origin of the beans, which decides whether the flavor runs to red fruit, nuts, earth or flowers; the fermentation, which decides whether that flavor developed at all, as our fermentation piece explains; the roast, light or dark; the conching time, hours or days; the ratio of solids to added butter; and the sugar, cane or beet, coarse or fine. A single-origin 70 from a Madagascar farm and a 70 blended from bulk West African beans are as different as two wines at the same alcohol percentage, which is the correct analogy: 13.5 percent tells you the wine is not fortified and not much else. Our craft chocolate guide is about the choices; the percentage is the frame they sit in.

Milk, dark, white and ruby, by the same rules

Dark is cacao and sugar, with no milk. In the United States, "bittersweet" and "semisweet" both require at least 35 percent chocolate liquor, and "sweet chocolate" at least 15 percent; "dark chocolate" is not a defined term. Craft bars start at 60 and cluster at 70. Milk adds milk solids; the American minimum is 10 percent liquor, the European 25, and a craft milk bar at 40 to 50 percent is a different food from a candy bar at 11. White is cocoa butter, sugar and milk, with no cocoa solids at all; the law requires at least 20 percent cocoa butter, and the percentage on a white bar refers to that fat, which is why it can say 30 and taste of nothing but cream and vanilla. Ruby is a trademarked process, introduced in 2017, that treats a particular selection of beans to keep a pink color and a sour-fruity flavor; it is milk chocolate by composition, around 47 percent cacao, and the color is the point.

What the percentage does not tell you

Quality: a bad 70 is worse than a good 60. Bitterness: a light-roast, butter-rich 70 can be gentler than a dark-roast 62. Health: the flavanols the evidence page discusses are destroyed by processing that the percentage cannot see, so a 70 can have a fifth the flavanols of another 70. Origin, roast, fermentation, conching, and whether the maker bought beans or bought liquor. All of that is in the ingredients list, the origin statement and the maker's name, or it is nowhere.

How to read the label properly

Read the percentage first, as a sugar dial, and decide where you like to sit: most people who think they dislike dark chocolate dislike 85, and are happy at 65 to 72. Then read the ingredients list, which is where the bar tells the truth: two ingredients, cacao and sugar, is the craft signature; cocoa butter listed separately means a smoother bar; vanilla and lecithin are conventional and harmless; vegetable fat, "chocolate flavor" or milk in a "dark" bar are the signs of a lesser one. Then read the origin: a single farm or region, a country, or nothing. Then the maker. By then the percentage is the least informative thing on the wrapper, which is what it should be. The bars on our shelf run from 45 to 100 percent and every one carries its origin and its ingredients, at 263 Josephine Street in Cherry Creek, Denver, and nationwide from theambrosianpantry.com. Start at 70 and taste sideways.

Sources & Further Reading

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