When I eat apples, I usually eat skin too but when I baked apple cup bread last week I had to peel the skin of some apples because of some customers' preferance.
So I decided to make a new jar of apple yeast water.
This time I used a jar full of skin and cores and fill it with water.
It started bubbling in 2 day and became really strong yeast water after 2 more days sitting on the kitchen counter.
Even though I did not feed any sugar or honey.
So if you are thinking about making yeast watet, use as much fruits as you can to fill the jar to get good result.
Weak yeast water does not give you good bread.