Cocoa solids require the addition of extra cocoa butter to cocoa liquor, leading to a cocoa solids surplus and thus a relatively cheap supply of cocoa powder. This contrasts with the earliest European usage of cocoa where, before milk and dark chocolate was popularized, cocoa powder was the primary product and cocoa butter was little more than a waste product. Cocoa solids contain flavanol antioxidants, amounts of which are reduced if the cocoa is subjected to acid-reducing alkalization. Health benefits have been attributed to cocoa flavonoids. Natural cocoa powder has a light brown color and an extractable pH of 5.3 to 5.8.
Hot chocolate variant "Heiße Schokolade Wiener Art" contains an egg yolk for thickness. In the United States and Canada, the drink is popular in instant form, made with hot water or milk from a packet containing mostly cocoa powder, sugar, and dry milk. This is the thinner of the two main variations. It is very sweet and may be topped with marshmallows, whipped cream, or a piece of solid chocolate. Hot chocolate was first brought to North America as early as the 17th century by the Dutch, but the first time colonists began selling hot chocolate was around 1755. Traditionally, hot chocolate