Can I ferment black garlic intermittently? Following this black garlic tutorial and in reference to this SA question, I would like to try making myself black garlic, and to try fermenting the garlic to different time to test out difference in flavor 

The tutorial suggest that garlic has to be fermented for 40 days continuously to become black garlic. It would be difficult to leave my oven, slow cooker, or a rice cooker unused for other cooking for a month. So my question is: can I ferment it intermittently - take out the garlic, use the cooker for something else, then restore the garlic and resume the heating. 

Would that still give me black garlic?
YES. Yes, you can. I just did.

My first attempt in my rice cooker had uncovered garlic heads in it for 10 continuous days-- the result was black but dried hard as rocks (and the process stank up the entire house the whole time).

My second attempt involved wrapping each head in two layers of foil, then putting the garlic in a much lower temperature warming oven (no thermostat at all, just a light bulb) for 10 days, which resulted in beige garlic. I then switched it over to the rice cooker for 2 days, turned it off, checked them, then another 2 days, turned it off, forgot about it for a day, checked them... another 2 days, turned it off, checked them... and found DELICIOUSNESS.

It needs more time, I think, it's not as sweet as I'd like yet and could be a little darker. I've seen some Koreans mention finishing the batch by just hanging the garlic in a bag for a week, so that's what I'm going to do.