An object of the present invention is to provide a yeast extract that has a masked or reduced yeast-specific unusual smell (yeasty flavor), is excellent in the balance and continuity of tastes, and offers a meat extract-like taste. The present invention provides a lactic acid-containing yeast extract containing 7.5% (w/w) or more lactic acid based on a solid content of the yeast extract. The present invention also provides a lactic acid-containing yeast extract obtained by fermentation of a yeast extract with a lactic acid bacterium, wherein the lactic acid-containing yeast extract contains 7.5% (w/w) or more lactic acid based on a solid content of the yeast extract.