Though reportedly also a component of more-complex dishes, shaved-to-order coconut tells you that this serving of tapia ($1.50), fermented black glutinous rice, was meant to be eaten on the spot. Tapia surfaces in different guises elsewhere in Southeast Asia, including Indonesian tape (Tah-peh); one version I encountered was sweet-sour, and exuded a dark reddish liquid that threatened to stain anything it touched. My tapia was firmer and less sweet, enough so that the counterman preemptively offered sugar to make it palatable. The first spoonful wasn't enough for my taste; the second, neither.
White Rose
716 Middlesex St. (near Branch St., in Pailin Plaza), Lowell, Massachusetts
978-710-6598
(From an August 2009 visit)