We picked up one excellent word—a word worth traveling to New Orleans to get; a nice limber, expressive, handy word—'lagniappe.' They pronounce it lanny-yap. It is Spanish—so they said. We discovered it at the head of a column of odds and ends in the Picayune, the first day; heard twenty people use it the second; inquired what it meant the third; adopted it and got facility in swinging it the fourth. It has a restricted meaning, but I think the people spread it out a little when they choose. It is the equivalent of the thirteenth roll in a 'baker's dozen.' It is something thrown in, gratis, for good measure. The custom originated in the Spanish quarter of the city. When a child or a servant buys something in a shop—or even the mayor or the governor, for aught I know—he finishes the operation by saying—

'Give me something for lagniappe.'

The shopman always responds; gives the child a bit of licorice-root, gives the servant a cheap cigar or a spool of thread, gives the governor—I don't know what he gives the governor; support, likely.

When you are invited to drink, and this does occur now and then in New Orleans—and you say, 'What, again?—no, I've had enough;' the other party says, 'But just this one time more—this is for lagniappe.' When the beau perceives that he is stacking his compliments a trifle too high, and sees by the young lady's countenance that the edifice would have been better with the top compliment left off, he puts his 'I beg pardon—no harm intended,' into the briefer form of 'Oh, that's for lagniappe.' If the waiter in the restaurant stumbles and spills a gill of coffee down the back of your neck, he says 'For lagniappe, sah,' and gets you another cup without extra charge.

(source: Mark Twain in 'Life on the Mississippi')

Three long sticks, carefully wrapped in crispest brown paper, and a half dozen or more of pink candy fish for lagniappe, and the little Jew girl sped away in blissful contentment.

(source: Alice Dunbar in 'The Goodness of St. Rocque & Other Stories')

The very small voice at his feet must have pleased him, for his black brows relaxed into a smile, and he poked the little one's chin with a hard, dirty finger, as he emptied the ridiculously small bucket of charcoal into the child's bucket, and gave a banana for lagniappe.

(source: Alice Dunbar in 'The Goodness of St. Rocque & Other Stories')

And madame, who understood and knew his ways, would fry him some of the bananas, and set it before him, a tempting dish, with a bit of madame's bread and meat and coffee thrown in for lagniappe.

(source: Alice Dunbar in 'The Goodness of St. Rocque & Other Stories')