One of the many friend missions in Judgment will have you eating at Smile Burger on Nakamichi Street. She mentions that she's doing cooking and will agree to let you try her food and give feedback, in return for not paying rent.
This will begin a friend mission that puts food in your fridge at your office, showing a friend symbol in your office for such. Whenever there is one there, go to your fridge and eat it, then give her feedback to whatever pleases her. Once you max out the friend meter, she'll then leave meals in your fridge regularly for you.
Just go to your fridge and eat these meals. It's randomized what the fridge will have, but there are 4-5 unique meals. Just eat them throughout playing the game, whenever you're running around, or near your office. It will pop very soon, and is not missable.