There are mantras to be recited and practice like Annashuddhi/parishechanam before eating. But are there any mantras to be recited before/while/after cooking to bless the food? Are there some practices to be followed?
You can chant Vishnu Sahasrnama and Lalitha Sahasrnama and excetra.It says here . This mantra is Annadata Sukhi Bhava which means the person who is giving me this food let them be happy. This is one mantra that you say when you are cooking.