Not to discourage you but the brewery may not be the most interesting investment.
I've got 3 breweries and the Fully automated brewery card. I bought them at the very beginning of my dCity journey almost a year ago. And the return is very low. I got less than 1 BEER during all this time.

Looking at the sim return, there is more than 20 more profitable cards.
When considering the amount of worker per sim (popularity taken into account), if you need to reduce your unemployment, again, it a very average choice.
And on a population increase point of view, it does not fare better either.

But hey, I'm just a very average player myself, so I could be very wrong ;)

Enjoy the game !!