Restraunt Recommendations in Manila???
Authentic restaurants can be found all over the city and itd outlying areas, i recommend that you explore any numerous seafood places on Roxas Ave near Manila Hotel on their own piers, or have your driver take you to Dampas, where the locals eat. Eat lechon anytime AND all the time as well...
I'd visited a few interesting spots in Makati last X'mas. Some relevant threads:
You can also check out the foodcourt at the Landmark - interesting food stalls.