What does "馔yu" mean? The Chinese explanation of "馔yu"

馔玉 zhuàn yù

Explanation: Food as beautiful as jade. "Selected Works·Zuo Si's "Wu Du Fu"": "If you look at the banquet, you will wear jade dishes." Li Zhouhan's note: "The jade dishes are more precious and beautiful than jade." "Jade Wine" by Li Bai of the Tang Dynasty Poem: "Bells, drums, delicacies and jade are not valuable, but I hope I will never wake up after being drunk for a long time." Song Dynasty Mei Yaochen's "He Picking Cai": "Pick the dishes with a precious ring knife, and board the banquet with delicacies and jade.