PDub --
what you are thinking is a great idea. I did a similar experiment last july. I did 6 batches in 4 weeks. Same yeast, (almost) same hop schedule yada yada.
I did my experiment on an amber ale (similar to speakeasy prohibition). Start with an all (or almost all) base malt. then do it again with another base malt. repeat the process adding some adjuncts.
My learning from this was: I've got alot to learn about brewing. Yeah, I've read books, studied malt tables, read magazines (mostly without pants). But nothing beats real data. I enjoyed this little set of tests so much, that I'm doing another set on hefeweizens next month (comparing infusion to decocts as well as different yeasts), then this summer I am repeating the amber ale experiment with hop varieties.
Have fun and ride safe.


