I haven't managed to stumble upon them. And twice while carrying a box of them in public i was stopped and grilled by strangers about where I possibly could have found them in NY (and I hadn't - got them in Buenos Aires) So I am guessing it isn't so easy to stumble across them. Funny enough - in doing a search for info on where to purchase, I culled a link to Chowhound! ha! how ironic yes? In the SF East Bay Area BBQ Special report. They were referred to as native to Peruvian/uruguyuan areas - is this actually correct? I thought they were specific to Argentina as is dulce de leche - and had just spread out over South America. Anyone know where these can be purchased in NYC? I have a source for 20 -27 bucks a box on the web - I included the link to elmarketcito below but would like a local (and preferably better priced)source. Thanks.