Martha on Day 4. I wanted Martha to be a learning experience as well. So, for four consecutive days I would get a sample, put it on a slide and have the kids take a look with the microscope. While we cannot really tell what we were looking at, it was fun imagining that there was a healthy coexistence of wild yeast and lactic acid bacteria. (It occurred to me on Day 4 to experiment on Martha by adding Yakult for a boost of lactobacilli...ha ha ha...) On Day 5, Martha got lazy and would only have very little bubbles so I thought it was not worth bringing out the microscope.
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