Found a recipe with green garlic , where would I find that ?

Incidentally, if you can't find it you can sub regular garlic and the dish - whatever it is - will work just fine. It's a bit different of course, but the difference is pretty subtle in a completed dish.

I've found it in supermarkets. I'd assume a farmer's market would also have them. It looks more like a spring onion / scallion or ramp rather than a garlic bulb.