am Indonesian by birth, constantly looking for authentic hometown food wherever i go, this is so far the best:

Indonesia Restaurant
678-680 Post Steet
tel: 415 474 4026
(about four blocks from Union Square at Post & Jones)

My favorite Indonesian restaurant in the Bay Area is:

The Rice Table in San Rafael on 4th St across the GG Bridge.

It has been family run for a long time. Unfortunately the wonderful grandmother who would come around to talk to you while you were eating passed away in the 90s. But the food is still just as good.

Nobbi