"Sweet" is the typical come-on that Chinatown fruit sellers apply to their handwritten signs. A few fruits are "very sweet"; some, merely "delicious." The moniker "Thailan[d] kiwi," however, seems to have been the invention of this one particular vendor. The fruit is known as chicozapote in Mexico and subtropical Florida, and by many other names — including chikoo, sapodilla, and sapota — around the world.
Its flavor mingles brown sugar and pear, Margret Hefner observes in Frutas y Verduras, with some of a ripe pear's granularity. Too bad that this one, like the rest of the batch, was rock-hard, and not nearly ripe. Ready to eat, it's considerably softer. Like a kiwi.
Streetside produce stand
Near the southeast corner of Mulberry St. with Canal St., Manhattan