I recently came across this thought from yogi Dharma Mittra in his book ASANAS 608 yoga poses:
Essentially, if you control your mouth-what you put into it and what comes out of it-you’ve controlled much of your mind already.
Being mindful of what we eat and what we say is practice in living truthfully.
5 keys to right speech from Buddhism:
‘It is spoken at the right time. It is spoken in truth. It is spoken affectionately. It is spoken beneficially. It is spoken in good will.’
Say what you mean and mean what you say is my interpretation, and it also applies to food choices.