Hi Bernardo, your starter does sound like it has a unique appearance, but I don't think anything has drastically gone wrong. What temperature water are you using and how warm is your kitchen? It sounds like after 12 hours your starter is looking a little over-fermented, so it may be helpful to use cooler water (60-70 degrees). Be sure to stir very well each time you feed your starter, discarding all but 4 ounces (1/2 cup) starter. Feed this 4 ounces of starter with 4 ounces (a scant cup) of flour and 4 ounces (1/2 cup) of water.
Barb
August 31, 2018 at 10:54am
In reply to My starter is four days old, I've fed it at about 12 hour inter… by Bernardo (not verified)