The terms "cocoa" and "cacao" are sometimes used interchangeably, but they refer to different products with different processing methods, flavour profiles, and nutritional properties.
The Source
Both come from cacao beans — the seeds of the Theobroma cacao tree. The difference is entirely in how those beans are processed.
Raw Cacao Powder
Raw cacao powder is made by cold-pressing unroasted cacao beans to separate the fat (cacao butter) from the solids, then grinding those solids into powder. The cold-pressing retains more enzymes, antioxidants, and nutrients than heat-based processing.
Flavour: More intense, slightly bitter, complex.
Colour: Dark brown.
Nutrition: Higher in antioxidants (flavanols), magnesium, and iron than processed cocoa.
Cost: More expensive than regular cocoa powder.
Cocoa Powder
Cocoa powder is made by roasting cacao beans at high temperatures, then pressing out the fat and grinding the solids. The heat processing creates a more mellow, conventional chocolate flavour.
Natural cocoa powder: Acidic (pH 5–6), lighter in colour, reacts with baking soda.
Dutch-process (alkalized) cocoa: Treated with alkali to neutralise acidity (pH 7–8), darker colour, milder flavour. Does not react with baking soda.
Substituting One for the Other
Raw cacao for natural cocoa: Substitute 1:1. The flavour will be more intense and slightly more bitter. The acidity level is similar, so leavening reactions should work correctly.
Raw cacao for Dutch-process cocoa: Not recommended without adjustment, since their pH levels differ. Dutch-process works with baking powder; natural/raw cocoa works with baking soda.
Dutch-process for natural cocoa: Do not swap without adjusting leaveners. Using Dutch-process where natural cocoa is specified (with baking soda) will result in insufficient leavening.
Practical Takeaway
For most home baking, natural cocoa powder and raw cacao powder are interchangeable. The key distinction is between Dutch-process and natural cocoa — never swap these without adjusting leaveners.