Mike Lyle wrote:
Or buy some mung beans and sprout them: that way you get real bean
sprouts and not beet sprouts. Sorry if this is too simple-minded for
you.

That's like saying "why grow cabbages when you can just grow carrots
instead". There's nothing wrong with having sprouted seeds that aren't mung
bean sprouts! There are some other very popular ones, such as alfalfa bean
sprouts, and less common ones such as sprouted onion seeds - Thompson and
Morgan do a huge range of them (I had about 25 different types at one point,
before the mice got into them!)