When is the best time to use your sourdough
I am new to sourdough. I ordered a starter from sourdo.com, it is from New Zealand. I think it is doing fine, it looks and smells good. I keep it on the counter all the time instead of in the fridge so there is no getting back activated. I feed it twice a day, at 6:30 in the morning and 6:30 in the evening. a couple of hours after I feed it, it bubbles up a couple of inches just like it is supposed to. My question is - when is the best time to use it? before I feed it? after I feed it, if so, how long should I wait? I made muffins yesterday, I used starter that was bubbling. as soon as I added the flour to my bowl it went flat and the muffins were like little rocks. I tried making cinnamon rolls the day before with some dough that I let set out and rise overnight - they were like rocks. So what am I doing wrong? I'm not feeding it the same amount of flour/water as the amount of starter I have (because the starter in the jar is probably about 8 cups) - I feed it about 2 cups of flour/water twice a day, throwing some out every few days when I see it starting to accumulate.
I'm starting to get frustrated, so any advice would be appreciated.