If you could only brew with ingredients found at the supermarket, what would you use?

[Dutchyman]

A lot of grocers sell bulk grains. As long as you could find raw grains (oftentimes, buckwheat or kashi can be found raw, esp. in heath food stores) they can be germinated at home; see this article for how.
From there, you can roast said grains to your desired toastiness, and mash as usual (though I would use a step mash for home malted grains).
As for yeast....I have seen "brewer's yeast" at my local health food store, but you could use bread yeast.
To sub for hops....though I have, again, seen "hops" at the same HFS. I'd try to take my inspiration from gruit recipies.
Health food grocers rock...

 

[tdavisii]

One more thread to make my already screwed up brain think of brewing even more then i do. Someone else posted somthing similar to this. I cant look at anything now with out wanting to turn it into a alcoholic beverage. fruit veggies sugar juice spices i mean i cant even go grocery shopping hardly.

 

[Waboom!!]

Agave Nectar