How do you deal with your speech when you were going to say to mean "that's small enough for one bite of yours when shrunk from boiling.", which is too long? Could you suggest what you may say in a real conversation?Well, "dead" certainly doesn't work for this in English.
I daresay you could say something like:
"As you cook leafy vegetables they shrink or reduce in volume".
I can't think of an obvious word to describe the finished article, though.
That doesn't work for me, I'm afraid: I only associate "wilt" with the result of a natural process.I think "wilt" may be exactly what you need. It can indicate a deliberate action (I left the chopped cabbage sprinkled with salt to wilt in a colander; I wilted the cabbage in boiling water) or simply a natural process: (The vegetables in the market were all wilted in the hot sun).