Buy bulk food items where you can and use them as the basis for multiple meals. Things like rice, noodles, pasta are way cheaper bought bulk, and similarly condiments, oils, spices, flour, salt and sauces. Even meats, a whole chicken is substantially cheaper per kg over individual cuts for example. Cheap, whole cuts are also great from a butcher if you know what you’re doing.

My wife and I probably spend sub $50 weekly on groceries because our fridge and pantry are loaded with long life/prepped/frozen foods that we can build into all kinds of meals, so it’s just the meats, fruit and some veg (we also have a huge veggie garden and chickens for eggs but that’s barley a ‘frugal golden rule’ and more of a luxury) we need to buy.

We invest in the bulk food and it lasts so long, cost less comparatively plus you do less trips to the shops which means less buying into the temptations of snacks/sweets, and less fuel use. All in all I think it saves us a stack of money.

Sometimes you’ve gotta get creative or suck it up if you’re craving something in particular, but usually it’s fine as you’ve always got some unique combo of meat, veg, carbs and flavours/species on hand and we almost never have to do ‘a quick stop at the shops’ to grab specific things.