Chocolate liquor is pure roasted cocoa beans ground into a liquid paste. It contains both cocoa solids and cocoa butter, and serves as the foundation for every type of chocolate. Some people also take it as a supplement for the natural flavanols and antioxidants found in cacao. You get a source of magnesium and iron alongside those compounds.
Most people eat a small piece or a measured portion of dark chocolate or straight chocolate liquor. Taking it with a meal helps the body absorb the fat soluble elements. You can eat it solid or melt it into a warm drink.
Watch the calorie and fat numbers because this is an energy dense food. The theobromine and caffeine in it can disturb sleep or make sensitive people feel jittery. Keep it away from dogs and other pets, as even small amounts can harm them.