Who makes the best causa?

[SusanaG]

I love causa, a Peruvian dish made like a lemony mashed potato pie filled with chicken salad (or fish but not in Boston). It's really refreshing in the summer. I've had it only from Victor's Peruvian Restaurant and El Chalan in East Boston. The one from Chalan has cilantro on top which gives it extra flavor. Has anyone else tried this elsewhere?

[italyinmind]

Machu Picchu in Somerville serves it (one with ck and one with seafood), although I haven't tried it yet.