This reminds me a bit of a meme that said something along the lines of "I don't want AI to draw my art, I want AI review my weekly grocery shop, workout which combinations of shops save me money, and then schedule the deliveries for me."
Where you could set a list of various meals that you like to eat regularly, a list of like 20 meal options. And then the app fetches the pricing for all ingredients and works out which meals are the best value that week.
You kind of end up with a DIY HelloFresh / meal in a box service.
"Dave, the cheapest meals for you this week are [LIST OF DINNERS]. Based on your preferred times, deliveries from Waitrose, Tesco and Sainburys are turning up at 7pm on Monday. Please check you still have the following staples in stock [EG pasta, tinned tomatoes etc]".