Only young, violet-colored specimens should be collected for food, rather than those that have turned brownish; brownish specimens have number of potentially poisonous look-alikes that are not covered here. The common and poisonous Mycena pura
can be similar-looking when it is young and still violet. It differs in that the cap is smaller, the stem is whitish, and it smells and tastes strongly of radishes. A number of inedible or toxic species of Cortinarius
are purplish and superficially similar but do not match all the key characteristics.
See also Laccaria laccata