Charak Samhita
ज्ञात्वैवं वृद्धिमभ्यासमथवा तस्य कारयेत् । सातत्यात्स्वाद्वभावाद्वा पथ्यं द्वेष्यत्वमागतम् ॥३३१॥
If patient is bored from taking the same food or does not relish the food, then food should be prepared by different methods which will be liked by the patient.
english translation
jJAtvaivaM vRddhimabhyAsamathavA tasya kArayet । sAtatyAtsvAdvabhAvAdvA pathyaM dveSyatvamAgatam ॥331॥
hk transliteration by Sanscript