Should be easy to use, remember what I bought before and propose things that are probably running out (based on my personal buying frequency), and allow sharing the list between multiple people. Ideally also allow adding recipes for meals that I cook often.
I think the closest to you requirements will be Grocy. You can define list of products you use, current stock, rules to add product to the shopping list based on amount, what to do when you move product between storage locations (e.g. move from freezer to fridge), etc. There’s also a mobile app. Having said that I stopped using it after couple months. Few reasons: mobile app had no offline mode, mobile app was not compatible with the latest app server version, I had many issues setting up current stock (many times I had to manually adjust the amounts after using consume/purchase option). Overall I like the idea but it didn’t work for me.
I am on the fence about Tandoor at the moment.
But there is this bunch. https://github.com/awesome-selfhosted/awesome-selfhosted?tab=readme-ov-file#recipe-management
I think out of the 3 kitchen and recipe managers I know, Grocy sounds most like it.
