@Dominionofgod As I see it, you do the studies for what you want, and their effect will be there for the next week's brewing. As
@defiantoneks says, it's the long game.
Since I'm at the end of chapters with everything upgraded, I don't have much use for the decaying resources. So, these seem to be great to use instead of just letting them decay or not making them at all. The cost of using them continues to go up, but what you get doesn't decay. So, it doesn't seem like a bad deal to me. Since it cost over 8 million coins per KP for me to buy, this also is a good place to spend the excess coins. Hammers too since I hate the wholesaler.
At least this is how I'm seeing it at the moment. However, that may change as I see how this
really works and not just how I
think it works.