Please can anyone suggest the best way to remove plasterboard adhesive from
brick so that the brick still looks Ok.
I've tried chipping it and sponging the rest with water , but now I have a
general grey dusty tinge to the brick. Must be a better way?

This is for a conservatory, where the previous people stuck plasterboard on
what was the external wall . I've removed the plasterboard but need the
bricks to look nice. House is 10 year old red brick.
Thanks