I would try what I do with spinach:
Wash the leaves and run them through a salad spinner.
Bring a largish pot of salted water to a boil.
While that is boiling, stack up 6-8 leaves at a time, roll them up and slice the roll with a sharp knife, making nifty little ribbons.
Toss the ribbons into the water and swirl them around with spoon.
Drain them after only a little bit, probably less than a minute. (I drain them through my salad spinner bowl.)
Run the wilted leaf ribbons through the salad spinner again.
Toss with olive oil, basalmic vinegar, some garlic, salt, pepper and maybe a little parmesan.