  We discuss anyon condensation in mixed-state topological order. The phases
were recently conjectured to be classified by pre-modular fusion categories.
Just like anyon condensation in pure-state topological order, a bootstrap
analysis shows condensable anyons are given by connected \'etale algebras. We
explain how to perform generic anyon condensation including non-invertible
anyons and successive condensations. Interestingly, some condensations lead to
pure-state topological orders. We clarify when this happens. We also compute
topological invariants of equivalence classes.
