Adding flavour to twistor strings

Twistor string theory is known to describe a wide variety of field theories at tree--level and has proved extremely useful in making substantial progress in perturbative gauge theory. We explore the twistor dual description of a class of $\Ncal=2$ UV--finite super--Yang--Mills theories with fundamental flavour by adding 'flavour' branes to the topological B--model on super-twistor space and comment on the appearance of these objects. Evidence for the correspondence is provided by matching amplitudes on both sides.