Gotta try those garlic smurfs one day....
It might be that you cooked a few Smurfs. They can look awfully like garlic cloves when they're hibernating, because they pull their hats down over their heads and snug up inside them.
(To the OP: Seriously, it's just a reaction with - most likely - the limes. No worries.)
QWP from griffen, but he was quoting himself. The original (unlocked) context is way over here.