Chau,
After some experiments,I'm finding I'm only seeing a noticeable flavor change when using KABF,compared to the other brands I tried.
I thought I was imagining things,but my wife and kids have told me the same thing,the 3 day dough tastes better than the 1 day dough.There is also a slight alcohol smell at times by 3 days,while the first day rise does not have that smell.
However,if I use Bouncer HG flour,I cant tell much of a change in taste,whether its 1-3 days in the fridge.I do not know why the KABF seems to give me those results.I have been using the same IDY yeast for a while,making similar hydration pies,same amount of everything else.AP flour does nothing for me taste wise,I have made doughs with it as well,and dont use it very often.
I have no way to scientifically explain it,but its what happens,so I usually suggest the practice for flavor as well.Maybe it is all in my head sometimes.
