So, I think I prematurely gave up on my first culture. It’s just slow, probably because I don’t have the (optional) diastatic malt powder. I couldn’t find any and didn’t feel like waiting for it to ship if I ordered it online.
This morning I moved on to phase 3, which is adding 1.5 ounces of flour and 1.5 ounces filtered water. The mixture gets a bit thicker at this stage. I’m supposed to move on to the next phase whenever it starts getting bubbly – 24, 48, 72 hours? Who knows.