Peru to Eastern Europe: "ah you think the potato is your friend, but you merely adopted it. I was born to it, molded by it, I did not see cereals till I was colonized and by then it only made me gassy!"
Back in the 1930s the Soviets managed to invent the in vitro fertilization and out-of-body human fetus development method by implanting the egg inside of a potato.
The resulting children born from these were named The Belarussians.
You'd need a way to convert the starches into sugars first.
I found a few forum threads where someone got as far as realizing that, declared maybe they'll try, and never came back. But no mentions of completed bean beers.