The continuous enzymatic in vivo estimation of blood alcohol was used for plotting curves of blood alcohol concentrations in 24 double-experiments from 4 to 6 h duration. Absorption and elimination of alcohol were observed under the influence of the food eaten before. Two hours after a light meal test persons drank whisky and blood alcohol curves were recorded determining increase, maximum and elimination. The curves varied especially in the phases of absorption. In a second test compared with the curves after a light meal the retardation of absorption was examined after drinking the juice of "Sangritta picante" spice in addition. Delayed alcohol absorption could be verified. After taking a fat meal the retardation of absorption was found even greater. Recorded after fasting for more than 12 h the curves showed a slower increase in blood alcohol concentration and a higher maximum in comparison with the curves after a light meal.