Yeast extract agar is a growth medium containing yeast extract. It may refer to: * The nonselective yeast extract agar of Windle Taylor * YM (selective medium), for yeasts and molds * Buffered charcoal yeast extract agar, for LegionellaThis article includes a list of related items that share the same name (or similar names). If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.