What would be the best method to UV unwrap and texture an onion-like object?
It doesn't have to be an onion specifically, it's just an example. I'm talking about all the objects that are spherical in shape and have distinctive parallel lines following the surface from one pole to the opposite pole, converging around both poles (like watemelons etc.).
I'm mostly interested with image-based texture solutions, not procedural ones.
The photo is Creative Commons licensed image taken by flickr.com/photos/user-colin/