looking for a good Hawaiian restaurant in LA (westside/SF Valley if possible) that caters. Needs to be authentic.
You want to throw a catered luau, then call Debbies. They don't have a restaurant. You can ask them where their next event is going to be and I'm sure you can check them out. I mentioned them in your other thread. I'm sure they can turn you on to some authentic entertainment also.
There's a fine line between luau food and plate lunch food, then places like L&L or Ono Hawaiian BBQ are quite adequate....I go to them when I can't get down to Bruddahs. If you're thinking of L&L, call the one in Pasadena and ask for the owner Dave (626)583-4960.
16417 S. Denker Ave.
Gardena, CA 90247
I suspect that most of the Hawaiian places will cater, at least in the sense of making big trays of food suitable for crowds.
Rutts is indeed the best Hawaiian place on the westside (not much competition, really) and they do cater. http://www.ruttscafes.com/ruttscafe_catering.htm The menu is a little smaller than ideal--e.g. no chicken long rice, no lomi lomi, no poi as far as I know --but what they do have is generally pretty good.
Back Home in Lahaina, on Sepulveda in Manhattan Beach, is not bad. Bigger selection than Rutts, a little more expensive, more commercial. But not bad. http://www.backhomeinlahaina.com/catering.html
There's an L&L fast food place on Lincoln in Santa Monica which I've tried once, and wasn't particularly impressed.
Most of the posts around here suggest that the Hawaiian food improves the further south you go toward Gardena, Torrance, Lomita, and environs. I haven't tried enough of these places to opine. Actually the best Hawaiian place in LA that we've tried so far is Shaka's in Alhambra. http://shakas.com/
Also I have no suggestions about where you'd get the hula dancers for your luau. :-)
Rutt's Hawaiian Cafe
12114 W Washington Blvd, Los Angeles, CA 90066
23305 Hawthorne Blvd, Torrance, CA 90505
Back Home In Lahaina
916 N Sepulveda Blvd, Manhattan Beach, CA 90266
101 W Main St, Alhambra, CA 91801
2300 S Garfield Ave, Monterey Park, CA 91754
L & L Hawaiian Barbecue
1916 Lincoln Blvd, Santa Monica, CA 90405