Read it through once

'There now, smell them, taste them, examine the bottles, inspect the labels. One of 'm's from Europe, the other's never been out of this country. One's European olive-oil, the other's American cotton-seed olive-oil. Tell 'm apart? 'Course you can't. Nobody can. People that want to, can go to the expense and trouble of shipping their oils to Europe and back--it's their privilege; but our firm knows a trick worth six of that. We turn out the whole thing--clean from the word go--in our factory in New Orleans: labels, bottles, oil, everything. Well, no, not labels: been buying them abroad--get them dirt-cheap there. You see, there's just one little wee speck, essence, or whatever it is, in a gallon of cotton-seed oil, that give it a smell, or a flavor, or something--get that out, and you're all right--perfectly easy then to turn the oil into any kind of oil you want to, and there ain't anybody that can detect the true from the false. Well, we know how to get that one little particle out--and we're the only firm that does. And we turn out an olive-oil that is just simply perfect--undetectable! We are doing a ripping trade, too--as I could easily show you by my order-book for this trip. Maybe you'll butter everybody's bread pretty soon, but we'll cotton-seed his salad for him from the Gulf to Canada, and that's a dead-certain thing.'