The legendary Nonya & Baba, located on River Valley Road, which used to be my favorite Peranakan restaurant in Singapore when I was living there is now sadly, gone.
They used to prepare signature dishes included Ayam Buah Keluak (which can take up to a week to prepare the nuts) and Itek Tim a soup with an interesting blend of duck and salted vegetables.
Now, I believe, PeraMakan is probably the best for this type of cooking in Singapore, although undoubtedly, their are many choices.

Level 3, Keppel Club
10 Bukit Chermin Road
Singapore 109918
(5 minutes drive from Vivo City/HarbourFront)
Tel. 65 63772829
Fax. 65 62727585
Email: kelvinlee@peramakan.com
Open daily, including Sundays and public holidays for lunch and dinner.
Lunch: 11:30 am to 3:00 pm (last order: 2:30 pm)
Dinner: 6:00 pm to 10:00 pm (last order: 9:30 pm)

For Enquiries: Call 65 63772829
Desmond Leong, Operations Manager
Tony Tan, Operations Executive
or email to enquiries@peramakan.com

We cater to vegetarians and customers with dietary requirements. Please call ahead to order your food

Cuisine: Traditional & Contemporary Peranakan
Price: Average $22 to $28 per head
Dress Code: Business, Smart Casual
Reservations: Required on PH and weekends
Restaurant Capacity: 130 guests
Patio Capacity: 80 – 100 guests

Ample parking lots at covered multi-storey car park or on white lots at Club House. many.