It means that Granny Liu likes her daily diet and praises Jia's food inadvertently and without trace. This is Granny Liu visiting the Grand View Garden in A Dream of Red Mansions. With the advancement of the travel process and entering the role with grandma Liu, she seems to be getting better and better. This kind of flattery is not exaggerated, which makes granny Liu play more and more handy and comfortable. For example, Xifeng said that silver chopsticks can test the poison in dishes. Grandma Liu's response is: If this dish is poisonous, our dish will become arsenic. Even if it is poisoned, it will be eaten up. First of all, this sentence is compared with your daily diet. Inadvertently, he praised Jia's food without trace, seemingly full of admiration, but not too disgusting and flattering.