I think it'd have to be more basil. My greek basil is hardier than sweet basil so I actually manage to keep it from being chomped by insects, but it's not as strong. I added some rocket as well and I think that's why it's got such a peppery kick to it
I think you're right, Thermomixer, next time I'll buy some additional basil and maybe go half/half with the mizuna. It wasn't too bad for an experiment, and it was a BRILLIANT bright green