The vexing thing is that it doesn't deduplicated ingredients from multiple recipes onto your grocery list. You'll end up with onions on the list 3 times if you have 3 recipes that take onions :-/
If anybody has a better alternative, I'm all ears.
I'm not sure exactly what the grandparent comment means by "new ordering", but AnyList supports ordering for pickup or delivery from Walmart, Instacart, Kroger, Safeway, Albertsons, and other stores: https://help.anylist.com/articles/feature-overview-online-sh...
(Disclosure: I am the co-founder of AnyList.)
And I agree about the pain point. It is part of what got me interested in this a while back.
I also think the decision of what to eat is also an issue with many people. Present them with a few options based on budget, preferences, and nutritional goals. Base those options on inventory data and expiration dates to reduce food waste (grocery bottom line).
Perhaps target the consumer group of:
1. at-home eater
2. enjoys cooking
3. wants to simplify the process.
Then increase demand by converting other eater-types into the target market.
Ultimately, I think user-experience would be the differentiating factor.