Mr Kitty absolutely insists that the bones are what makes the sardines crunchy (good)
i am working to get there :-) But skin, that I could eat.
Serve with an old-fashioned cornbread and a cabbage-based slaw. You'll have a happy Mr. Kitty on your hands, I'll guarantee.
The tail, btw, comes out like a potato chip. The spine, only bone left in the smelt after deep-frying, will be delightfully crunchy for him. You, perhaps, might want to pull the spine before eating the smelt; unless you're a crunch freak, eating the spine WILL be a very different experience for you.