Add lentils or butter beans to most mince dishes to bulk it up.
I only ever buy meat when reduced. Tesco is good as they have the reduced section rather than the reduced food still in place and you have to search for it. I have a freezer draw just for the reduced meat as obviously if you are using it all week you have to freeze it immediately being about to go out of date. same with bread if you have the freezer space sometimes there’s loads of bread for pennies.
do you drink? A bottle of wine or two a week adds up
things like sauce jars buy in bulk when on offer. Do you need the branded stuff or Will own brand do?
bars of soap. Soooo much cheeper and last much longer than liquid soap (better for the planet too!). I actually have found lots of the eco subscriptions saving me money things like toilet roll washing tabs (give up fabric conditioners). Order 5 litres of white vinegar and it cleans most things.
like the lentils add frozen peas or beans to meals.
lots of pasta meals- if you get the massive supermarket own brand of pasta it’s cheeper just boring penne or fusilli. noodles not pot noodles but the instant kind with the seasoning packet (you don’t have to use the seasoning packet use the noodles in place of the normal more expensive Sherwood noodles or whatever brand you are used to. Rice- again cheeper in bulk.
boring fruits instead of berries. Veg in season (or reduced!)
tinned soup (we have soup whenever I find tiger bread reduced)
iceburg lettuce for salads.
Try not to get set in your ways for packed lunches. Look for what’s on offer and adapt
own brand cheddar cheese. Mature and use less
if you really want to save money then the own brand tinned new potato’s and bother veg is often cheep. You notice the difference in taste however. Tinned fruit is ok though
for gluten free look for reduced. The bread is often reduced. I usually have GF pancakes and bagels in the freezer
I moved to tinned veg to free up space in the freezer for all my reduced purchases.
batched cook and freeze. Things like 500g mince that I’ve stretched with lentils means leftovers I can freeze.
switch to tap water. You do adjust after a while without fruit juice and squash. I’d rather tap water than cheap tea bags 🤢
I'm not a convert but I’ve seen garlic and onion seasoning recommended as cheeper than the fresh.
I know you were asking about food but eBay/bunted bundles of clothes saves loads and you can sell the individual items you don’t like from the bundle.
jumpers and warm socks instead of the heating on. Snuggle under blankets etc. Only wash dirty clothes particularly jeans can be worn more than once before washing.
Cut snacks and Look and your portion sizes. Tinned fruit and possibly tinned custard as dessert means smaller portions for the main meal are easier to tolerate.
own brand breakfast cereal. Own brand jam/marmalde/etc on toast for breakfast.
oats are cheep GF breakfast. Purée whatever fruits are in the reduced section and you can make oat breakfast bars and freeze. The value chocolate bars are disgusting to eat but grate then into breakfast bars etc instead of chocolate chips and it’s good value.
I don’t have the space in my current house but I saved loads when I had the space for a second freezer! If you have the space definitely consider that