Anyone eaten horse's hooves? If you've eaten Chinese you may have. Unfortunately, in the most of the west, they usually only come in cans and are a poor substitute for fresh hooves.
S:马蹄; T: 馬蹄 (mǎ tí) means horse's hoof, but also refers to Eleocharis dulcis or E. congesta, which you probably know better as water chestnuts. The unpeeled tubers (corms) of the aquatic plant are said to resemble horse's hooves. Hmmm. Maybe.
If you are able to source fresh hooves, you will know how crisp they are and that they have a mild but definite taste. Canned examples tend to be less crisp and are tasteless. The canned variety come either whole or sliced. The whole ones tend to be a bit crisper.
Of course, texture is as important as taste in Chinese culinary thinking. I've never seen canned water chestnuts in a supermarket here (or any other canned vegetable, for that matter).
In the wet markets, they are sold both unpeeled or the vendor will peel them for you - a lot easier if you are going use them today.
Keeping peeled fresh in water in the fridge for a day or two is highly recommended.
They are eaten raw or used in stir fries, in dumplings or in braised dishes.
Trot on!