School help again! Pickles or something else with bacteria or fungus
I'm hoping you can rescue us again. My daughter (needed Northern French recipes last time) is now working on a biology project where they need to make a food which uses a bacteria or fungus to produce something else. Namely mushrooms wouldn't do but pickled mushrooms (not using vinegar) would work. So, other than sourdough bread which too many others are doing, can you think of something not too difficult for a 15 year old which uses bacteria or fungus. We've thought of pickles or something else pickled using a brine or an Indian dosa but haven't found a good recipe for that.
Since these can take a long time to develop the teacher hasn't given them a turn in deadline but she needs to know by Monday what she is going to do and what the bacteria or fungus used is.
Ideas and recipes (please?) would be greatly appreciated.
Thank you thank you
It is possible to make your own root beer at home. If you Google up root beer recipes there are a bunch out there and there are some kits too. The real stuff is made with yeast which in turn provides the carbonation. There are some kits available too. That could be really fun and a surprize to the others.
How about Kombucha? I bought a culture on ebay and it worked for one batch and then the second one got moldy or something--all stringy and weird.
But that first batch was great. I was checking on growth every day. It felt just like a school science project.
Any baked product involving yeast (a unicellular fungus) would qualify, but that may be too obvious. As cheryl h suggests, yogurt is probably the easiest, but cheese would be much more dramatic and home cheese-making supplies are readily available (it may not end up being very good cheese, but I doubt that's the point of the exercise).
Simple pickling with vinegar wouldn't really qualify - the vinegar is made by bacteria, of course, but I don't think there's any further bacterial activity going on when it's used to pickle cucumbers (for example). However, sauerkraut would certainly qualify, as would several other types of natural "pickling."
I suppose if she really wanted to get some attention she could brew up a batch of beer, or even wine, but I'm not sure that's the kind of attention she'd want.