I have eaten salads with them in, and some Asian fusion meals which used them for decoration. Don't ask me what they tasted like as I can't recall. I'm sure that if they were strong, or tasted terrible, I would have remembered, so they must have tasted nice.
Yes - as part of a floral salad. Very pretty, tasty and colourful! There is a whole list of flowers which are edible although it is best to google search them before using as only certain parts of some flowers can be used. Some of them are sunflowers, pansies, carnations, begonias, marigolds, chrysanthemums, clover, violets, geraniums, roses, hibiscus, honeysuckle, lilac and peony There are many more but these are just a few.
Yes. I ate them as a child. There are many edible flowers and I am happy to include them on n salads and on cheese or fruit platters. My sister helped a woman who grows edible flowers for the restaurant industry so she has given me helpful information. Nasturtium leaves and flowers can be used to make a delicious flavoured butter that is lovely on savoury scones.
I don't think this plant grows in my hometown. If I do get the chance to eat that, I would. I mean, I'm not a picky eater and I would try anything as long as there are no dire consequences. The last flower I ate was a chrysanthemum. There's a resort in a nearby island that serves flower salad.