[firedrake] visualising 2nd order element

Hi all, I would like to visualize the result of simulations based on 2nd order elements. However, using plot(u) only gives a linear interpolation. I know this from fenics and the workaround is to interpolate u onto a finer mesh and plot the outcome then. Does that work in firedrake, and if so how do I do it? Thanks a lot in advance for your help! All the best, Tobias