Cacao percentage tells you what share of a product's weight comes from cacao-derived material, cocoa butter and non-fat solids combined, not how it was processed or how much of that material actually carries flavanols. Since flavanols sit almost entirely in the non-fat solids, and a bean is naturally close to half fat, the percentage on a label can overstate what you're actually getting. Percentage is a starting point, not a quality or flavanol measure.
What the percentage actually measures
Cacao percentage refers to the proportion, by weight, of the finished product that comes from the cacao bean, both cacao solids and cacao butter combined. The remainder is generally sugar, and for milk chocolate, milk solids. A bar labelled 70% means 70% of its weight comes from the bean. It says nothing about how that bean was grown, sourced, or processed.
Why a higher percentage isn't automatically "purer"
As covered in our article on what raw chocolate actually is, flavanol content depends on processing, not on cacao percentage. A 90% bar that has been heavily roasted and alkalized can retain fewer flavanols than a gently processed 70% bar. Percentage measures quantity of cacao material, not what happened to it before it reached the bar.
Cocoa butter contains none of the flavanols, or much else
Cacao percentage combines two very different components: non-fat cocoa solids and cocoa butter. A whole cacao bean is naturally close to half fat, roughly 50 to 58% cocoa butter, with the remainder made up of non-fat solids. Flavanols are concentrated almost entirely in those non-fat solids. Cocoa butter itself, chemically a mix of saturated and monounsaturated fatty acids, contains essentially none.
This isn't unique to flavanols. Minerals such as magnesium, iron, and zinc, along with the fiber and protein in cacao, are also concentrated almost entirely in the non-fat solids. Cocoa butter is essentially pure fat: it contributes energy and texture, but very little of what makes cacao nutritionally interesting.
This means the percentage on a label doesn't tell you how much of that material is actually flavanol-relevant. Some chocolate makers add extra cocoa butter beyond what's naturally in the bean, for a smoother texture, which raises the percentage without adding any flavanol content. Two bars at the same percentage can differ substantially in how much of that percentage is non-fat solids versus added fat.
What percentage doesn't tell you
- Roasting temperature
- Whether the cocoa was alkalized (Dutch processed)
- Whether extra cocoa butter was added
- Flavanol content
- Bean origin
Where percentage is actually useful
Percentage is a reasonable guide to sweetness and intensity. Higher percentages generally mean less sugar and a more concentrated cacao flavor. For taste preference, it's a fine starting point. For anything related to flavanol content or processing quality, it isn't.
What to look at instead
Processing temperature, the absence of alkalization, and independent lab verification of flavanol content are what actually indicate how a product was made and what it delivers. Our guide on buying raw chocolate covers this in more detail.
Our Raw Cacao Bar 100% is made only by grinding whole beans, with no cocoa butter added beyond what's naturally present. Our Raw Cacao Bar 80% does include added cocoa butter for texture, alongside date powder for sweetness. Both are kept below the point where flavanol degradation accelerates and independently tested, but the 100% bar carries a higher share of non-fat solids relative to its total weight.
Summary
Cacao percentage is a measure of quantity, how much of the product is cacao-derived material, not a measure of quality or flavanol content. It also doesn't distinguish between non-fat solids, where flavanols and most other nutrients live, and cocoa butter, which contains almost none of either. Two bars with the same percentage can be processed completely differently and carry very different ratios of solids to fat. If flavanol content matters to you, processing temperature and independent lab testing are the numbers to look at, not percentage.
References
Miller K.B., Hurst W.J., Payne M.J., Stuart D.A., Apgar J., Sweigart D.S. & Ou B. Impact of alkalization on the antioxidant and flavanol content of commercial cocoa powders. Journal of Agricultural and Food Chemistry, 2008;56(18):8527–8533. https://doi.org/10.1021/jf801670p
Kothe L., Zimmermann B.F. & Galensa R. Temperature influences epimerization and composition of flavanol monomers, dimers and trimers during cocoa bean roasting. Food Chemistry, 2013;141(4):3656–3663. https://doi.org/10.1016/j.foodchem.2013.06.049
Magrone T., Russo M.A. & Jirillo E. Cocoa and dark chocolate polyphenols: from biology to clinical applications. Frontiers in Immunology, 2017;8:677. https://doi.org/10.3389/fimmu.2017.00677
