The word "blanched" is just a fancy way of saying "briefly boiled." It's my favorite kind of cooking: boil water, add vegetable, pour into colander seconds later. That's it!
This is what I do with bok choy when I buy it by the bagful in Chinatown or the local Asian grocer. It's super cheap and an easy alternative to the bore-a-thon salad.
Boil water, add bok choy. Let it sit for 30 seconds.
Pour out the water into a colander. Run under cold water.
Here I've squeezed out the water and put into a bowl. I sprinkled on some sesame seeds and add soy sauce or ponzu (citrus soy sauce).
GO GREEN! Super healthy and perfect for the hot summer months. I do this with spinach too, and all other bitter Asian greens.