guava + black salt is an incredible combo. Sadly, it's very hard to get good guava here in bay area. If anyone knows a good place, I am all ears. I love the the green raw guava more than the white-ish ripe ones.
Any Indian Grocery Store in bay area, in Guava season like summer. Some example chain stores are New India Bazar, India Cash & Carry, and many other single store. I sold these all of this last year as a Cashier, and in cheap as Apples.
Apart from green raw, white ripe, we also had pinkish ripe guava in India. Eating Guava or chewing Guava leaves helped me in mouth sores when I was a kid.