I have now created a sourdough culture twice. it has been going beautifully and I was stirring it every other day.
On both cultures, I have missed a day of stirring and when I came to look at it, it had developed a dry thick top surface. the surface looks like a pancake but doesn't look nice.
When this happend with the first culture I chucked it all and started again. Now its happened with the second I just want to check that I shouldn't just scrape it off and transfer the remaining culture into a new jar and continue.
advice gratefully received