Rice, sesame, mung beans, pigeon peas, yardlong beans. That's what archeologists found in Angkor Thom (Bayon Temple) excavations.
The authors found that "of the identified plant parts, rice has the highest representation across all samples analyzed. Other economic crops found in Trench 4 are sesame (Sesamum indicum L.), mungbean (Vigna radiata), yardlong bean (Vigna unguiculata subsp. sesquipedalis), hyacinth bean (Lablab purpureus), pigeon pea (Cajanus cajan), cotton (Gossypium sp.) and Indian kapok or silk cotton tree (cf. Bombax/cf. Ceiba). None of these crops are native to Southeast Asia with many from India or via India (Castillo et al., 2016a). The lead vessel deposit found in Trench 5 is composed of desiccated seed remains. This deposit principally comprises three crops: rice, sesame and mungbeans. All three crops were found in great abundance and more than a thousand seeds of each were identified (...)
The botanical remains found in a lead container from Trench 5 probably had ritual significance. The association of rice with sesame and mungbean is particularly relevant in drawing this conclusion. These plants are listed together, usually in the same order, in a series of inscriptions in Old Khmer detailing offerings and provisions to Angkorian temples (Old Khmer sru raṅko lṅo santek, ‘paddy, husked rice, sesame, beans’; Pou, 2004). Mikaelian (2007) proposes that the association of these plants is a metaphoric representation of agrarian production in the Angkorian kingdom. The same plants also appear in Sanskrit epigraphy as essential elements of the pūjā or daily ritual."
Read the full article here:
Castillo, CC, Polkinghorne, M., Vincent, B., Suy, T.B., Fuller, D.Q. (2018). Life goes on: Archaeobotanical investigations of diet and ritual at Angkor Thom, Cambodia (14th–15th centuries CE). The holocene 28 (6), 930-944 https://doi.org/10.1177/0959683617752841
Of course, if you go around the temples, you will see carvings of the palace people in food setting, cooking. Check here a blog: