I boil broccoli, eggplants, courgette/zucchini and okra for an hour on high heat before eating them, because I prefer them totally soft so that I don't have to chew them (for personal reasons, irrelevant here). But does it kill the ingredients in them? If yes, then which ingredients?
If necessary, I should pont out that I don't like to fry them, as I don't want to add any extra oil, and also it won't give me the mashed, soft texture I'm looking for.
If I don't drain the water used for boiling, then am I still getting all the nutrients from these vegetables? Here by nutrients, I meant all the vitamins and the minerals (e.g. calcium, iron etc.).