OK, I've never grown garlic before so I had no idea what this large curly flower-like stem was. Fortunately, I'm not the lazy type and looked it up.
Turns out it's called a scape and will eventually flower. Everything I read said to cut it off as its removal will promote bulb thickening... so I did.
Google says you can cook with it and if you do you should treat it like regular garlic.
Anybody out there ever do anything with their garlic scapes? Recipes of note?