Attachment to Food

It is the attachment to food, the greed and eagerness for it, making it an unduly important thing in the life, that is contrary to the spirit of Yoga. To be aware that something is pleasant to the palate is not wrong; only one must have no desire nor hankering for it, no exultation in getting it, no displeasure or regret at not getting it. One must be calm and equal, not getting upset or dissatisfied when the food is not tasty or not in abundance— eating the fixed amount that is necessary, not less or more. There should be neither eagerness nor repugnance.
To be always thinking about food and troubling the mind is quite the wrong way of getting rid of the food-desire. Put the food element in the right place in the life, in a small corner, and don’t concentrate on it but on other things.

Ref: Letters on Yoga – IV