The way I did this was a new shopping algorithm. Every time I pick and item and have it in my hand (ready to drop into the shopping cart) I ask myself these questions:
- Do we really need this, or is this an impulse buy?
- If we need it, is there a different brand that's cheaper?
- If it's a good price, do I save in the long term by buying more and saving the rest? (say, freezing meat)
But I really shouldn't be too smug, because the Chiefio has been posting on how to eat really cheaply, while still eating well (e.g. paella - my one splurge was a pineapple and bacon sausage that would be really, really good in a paella). The posts are long and information-dense, but if you want to save serious money at the grocery store, they're important reads. It dovetails nicely with prepping as well.
Car yogurt and cheap eats
A Variety of Low Cost Meals
Meals By The Numbers