I love seltzer water, but with countless selsa brands out there, I still can't decide on which one's my favorite.

But unlike me, Barry Joseph knows what he likes.

I like Schwabst by itself as a plain clear seltzer, but with black cherry, thumbs down.

See, Barry's an expert on this beverage.

He wrote a whole book about it called Celsertopia,

The Extraordinary Story of an Ordinary Drink.

And on a Friday afternoon,

I traveled to the industrial era of Brooklyn, New York,

to meet Barry and do a little taste test with him.

All right, LaCroix, Guava, Sao Paulo.

Is this how guava tastes in Sao Paulo?

Let's see.

Now that ain't bad.

Excuse me.

I like that.

All right, but I also wanted to know his thoughts on Perrier.

I drank this because I wanted to be nice to you since you brought it to me.

It is not bad.

It's just not my thing.

The bubbles aren't as sharp as I want.

I like my seltzer pure without any minerals in it.

Now, Barry might seem a little picky here, but the thing is that he's used to having pure seltzer,

...