  For a finite group $G$, a $G$-crossed braided fusion category is $G$-graded
fusion category with additional structures, namely a $G$-action and a
$G$-braiding. We develop the notion of $G$-crossed braided zesting: an explicit
method for constructing new $G$-crossed braided fusion categories from a given
one by means of cohomological data associated with the invertible objects in
the category and grading group $G$. This is achieved by adapting a similar
construction for (braided) fusion categories recently described by the authors.
All $G$-crossed braided zestings of a given category $\mathcal{C}$ are
$G$-extensions of their trivial component and can be interpreted in terms of
the homotopy-based description of Etingof, Nikshych and Ostrik. In particular,
we explicitly describe which $G$-extensions correspond to $G$-crossed braided
zestings.
