Answer:
It is the great nemesis of the lactose intolerant.
An open ended barrel, it is shaped like a hive. It is filled with the flesh, and the flesh is alive!
By Moon or by Sun, I shall be found. Yet I am undone, if there's no light around.
Each of these ends in a kettle full of precious metal and the double variety is quite awesome
It stands upright and can be quite grand. Its secret is not hidden but right at hand. What is it?
People take me on walks and I run and have fun. What am I?