combining your shopping when you first move in with your OH!

Appologies if this has been posted before, nothing came up on the search...

I was just wondering whether anyone had any tips/ experiences to share about couples "combining" their grocery shop when they move in together?

I'm thinking about this because the other day me, and my OH of nearly 2 years had our first conversation on the possibility, that maybe, at some point, we might think about moving in with each other, and we happened to have this conversation as I was putting my groceries away (as one does.)

We often do our big grocery shop together, but with seperate areas of the trolley, and then each pay for our own and take it back to our respective houses. We both like to keep a sharp eye on the budget but I've noticed we have wildly different shopping styles:

Me: I'm vegan, and quite Old Style - I like to make all my food from scratch and don't mind spending time in the kitchen. I like a bargain, but I have set things that I always like to buy regardless of whether they're on offer (like tomatoes, peppers) because they form the bulk of my diet, and certain things I prefer to pay more for because I feel they're a healthier or tastier option (like wholemeal pasta) - I like to enjoy my food and to eat healthily. I almost never buy things like cake or chocolate or snacks as I consider them unnecessary, and therefore a waste of money at any price.

Him: He's an omnivore who likes his meat and fish, but will eat veggy without any fuss - I'm loathe to admit it but he's also a lot less fussy than I am (although I'm not too bad, I'll eat nearly all vegan food that's put in front of me, there are just certain things I prefer and so cook most often)!. His main approach to grocery shopping is "buy all the stuff with yellow stickers on" - he then constructs each meal based on whatever needs using up first, rather than based on considerations of taste (as he says "I like all food so anything I make is nice!"). He can cook, but dislikes wasting time in the kitchen, "faffing" with complex or time consuming recipes, or creating any kind of mess (I'm a messy cook!). He generally objects to ready meals/ processed food on basis of price, but if they're yellow stickered he'll happily buy them. He also has a big thing for cakes and treats - at least half his grocery shop (which, incidentally,usually costs far less than mine) is always yellow stickered sweet stuff: bags of dougnuts, packs of muffins, chilled chocolate desserts, bags of sweets. Stuff I just see as a waste of money and wouldn't eat anyway. He does eat all the healthy stuff happily - it's just he always has to follow it up with a doughnut!

Thinking about this, I despair thinking about how we would ever combine the grocery shopping in a way taht would satisfy my need for the foods I like/ think are healthy, and his need to spend as little as humanly possible regardless of what food you actually end up with! (We also have wildly different earnings - he earns almost twice what I do).

It also makes me think about my ex, with whom I lived for several years - he was an incredibly fussy eater and I ended up just going along with his preferences as it was easier - all meals contained quorn (he couldn't eat a meal without something to "sink his teeth into"), homemade pasta sauces were not allowed, certain brands of things etc...

It's not an immediate problem as such, and I'm sure we will talk about it ourselves, but I'm just wondering whether anyone had anything to share on the topic I guess!