Below is a picture of one of the bulbs freed from the package. It is slightly browned compared to a regular bulb. The outside is still papery, but a slight squeeze will reveal the garlic is much softer than a normal blub. It still smelled like garlic but with a sweet note to it.
If you find black garlic at your local grocery store, buy some and give it a whirl. At two bulbs for $5, it isn't an expensive experiment. I've started incorporating into my recipes......be looking for how I've used this new ingredient at The Teeny Kitchen That Could.