( not the person that made the "outside food" comment )

"you have to grow your own" is hardly the way to think about it .. we source the vast bulk of our food locally from our state and various farm groups.

To address your questions; Yes, we (the household I live in) have our own poultry, yes we grow our own grain, yes we have our own sheep. Ditto potatoes, figs, oranges, lemons, manderins, blueberries, garlic, herbs, olives, olive oil, etc.

No to "milk cow" - this isn't prime dairy country; that's some 500 km south and that's where we get milk from .. still extended family though. Beef cattle and the best fish is some 1,000+ km north - still the same state and still from extended family.

Essentially what we eat comes from our land or that of people we know either directly or with a single intermediary.

It's pretty healthy that way, we have one of the highest life expectancy's on the planet and COVID was a non issue here, both of the two roads in|out of the state were "closed" (goods trucks loaded | unloaded with no driver social contact, just sleep over, move on) the ships and airports quarantined with a mandated seperation of people or a mandated one-two week isolation if coming in.

Here's the local grain co-op: https://en.wikipedia.org/wiki/CBH_Group .. we can pass harvest on and get back ground grain in sacks for home use.

State land area is 3x that of Texas, state population 2.5 million (ish), mostly city dwellers.

"Outside food" - overly processed as found on (say) US supermarket shelves ... dunno much about that.

Offtopic, but wow, I looked at some photos of Wheatbelt, and, amazingly, Australia can be intensely emerald-green all over! Before that, basically every photo of Australia outside cities I've seen showed scant khaki-colored vegetation at best, and Mars-like red and orange soils.

The wheatbelt is pretty seasonal, lush green in the winter months, dry yellow to brown following harvest - our neighbours here put up a lot videos on their channel year round, this is after harvest: https://www.youtube.com/watch?v=7owwTz7Z0OE

The south west corner of the state is dairy country, forrests, caves, big surf, cool year round, the northern part of the state can get pretty hot - the Pilbarra is sparse dry desert country that explodes with colour when the rains pass through.

If you're buying and preparing whole foods, and not buying processed meals or eating out, you probably have a good enough handle on what you're eating. No need to become a certified organic smallholder.

Not op and not raising my own cattle. However IMO finding a farmer you trust and ordering directly once a month or so is easier and cheaper than buying meat in supermarkets.