The leaders, including heads of state and Sultan of Brunei, enjoyed a host of vegetarian and non-vegetarian Indian dishes.
The guests were served 'tawa masala pomfret' and 'makhmali murgh kebab' as non-vegetarian starters which were followed by 'gosht barrah rogini', 'ghia ka kofta', 'rajmah and dahi' for the main course.
For the vegetarian, it was 'bhuna jeera paneer tikka' and 'pudina muttar kebab' as starters and 'paneer nizampur', 'ghia ka kofta', 'rajmah and dahi' with assorted Indian breads, pickles, papad and chutney in the main course.
The leaders from ASEAN (Association of South East Asian Nations) were here for the two-day Commemorative Summit to celebrate 20 years of their relationship.
They also relished 'khusk gajar mutter', 'laccha basket', 'goan prawn curry', 'malai gucchi dhingri' (morels and mushroom in aromatic gravy), 'aloo gobhi' and 'subz dum biryani'.
Prawns were for the non-vegetarians and 'malai gucchi dhingri' was for vegetarian while the rest were common to all.
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The guests also enjoyed north Indian favourites 'gajar halwa', 'kesari phirni' and a 'sandesh' selection for dessert.
Leaders from Brunei, Cambodia, Indonesia, Laos, Malaysia, Myanmar, the Philippines, Singapore, Thailand and Vietnam were present at the lunch at the Durbar Hall of the Taj Mahal hotel.
The hotel was virtually out of bounds for the other visitors.