A proper dosa — the wafer-thin, honey-hued, crackly crepe made from finely ground rice and black lentils that's a staple in Southern India — overhangs the plate by several inches. At Chai & Chai, an off-the-beaten-path sleeper in Aurora that doles out both Indian and Arabic dishes, the dosa spans two feet, possibly three, for a sight that's almost as impressive as the taste. Roll up the dosa and load it from a bowl of mildly spiced curried potatoes and a trio of chutneys: a red-chile version that breathes fire; a pale, mellow coconut sauce; and a mint chutney that pops with acidity. One dosa easily feeds two — but you may be too selfish to share, particularly since these epic delights are only available Thursday through Sunday.