I had a bunch of purple opal basil - which I made into pesto - then put on a pizza. First I made some beet juice to put in the dough to make it good and purple. Piled on red onions, plums (just a few), some blue cheese, and some chopped fresh purple basil.
It has a very strong flavour, and is quite rich, so a little bit went a long way - which is good, so I can take some to friends for lunch tomorrow!