[Problem]This invention addresses the problem of enhancing the richness of generic processed food and beverage items without imparting a disagreeable flavor and without increasing the calorie count or salt content. The additive to be added in this case is preferably a generic food item that is highly safe. [Solution] An appropriate amount of a yeast extract is added to a generic processed food and beverage item, the yeast extract having a peptide content of 5 wt% or higher, an RNA content of 5 wt% or higher, a free amino acid content of 6 wt% or lower, a glutathione content of 0.5 wt% or higher, and preferably, additionally a dietary fiber content of 15 wt% or higher.