Cava 101: What is Cava?

Maybe you’re familiar with the term “Cava”, or maybe you’re not. But y’know that iconic black and gold bottle of bubbly that you’ve seen at every New Years Party? Surely you’ve had a glass of it at some point right? Well, that’s Cava. So what is Cava exactly? And what makes it different from Champagne or Prosecco?