Dukka is really easy to make. It is always good to have on hand as snack with all sorts of infused oils and homemade bread. We make most of our dips which are also great for snacking with veggie sticks of all sorts.
I am into dehydrating. I make kale chips and fruit leathers. They keep really well in airtight containers. Also good for beef jerky and biltong but I have not gone down that path yet.
There are often el cheepo electric dehydrators for sale at shops like Homeart. Around $40 will see you with a 4 or 5 tray bottom-motor dehydrator. Mine is working very well. The top-motor ones are much noisier. Do the drying outside if you can, cuts down on the hot air inside the house. We've got one for small jobs and when we have a glut of Bananas, the 12-tray oriental knock-off of an Excalibur did us proud.
and they are damn noisy.
My 5 tier one - I have to use it in the laundry over night. Yeah, it's a top motor.
I do my own jerky. That stuff costs almost $100 a kilo! You gotta be kidding me. I don't like bought jerky either Craig. I'll have to give you a crack at mine - you get to flavour it to your own taste so it should in theory be perfect.
Can't remember the last time I bought pesto.
I buy cheap cheese to cook with and I also only tend to do breads on the weekend. Same with pasta, I love to make it occasionally but not mid-week.
If I wasn't so busy, I'd do all my own chilli sauce and relish. They're pretty easy too. I also have a year's supply of different jams in the pantry. I could do my own peanut paste, but I tend to be too lazy. Mine is certainly nicer than the shop bought stuff.
Oh, and of course I don't buy booze.
The only thing I can suggest is freezing crop for use down the track.
Some needs blanching for a moment in hot water, like beans (don't overdo it like I did last time - they come out limp but still useful). Corn can just go straight into a bag with or without the husk.
You have three times the number of people to feed than I do Craig, stuff get's eaten quicker.