I meal-plan and shop monthly. In winter we use mostly frozen vegetables (more nutritious than those flown in from far away). So once a week we stop in to get fresh fruit, maybe salad things, and perishables like orange juice or dairy products. I don't let myself walk through the aisles or the frozen section on those trips, or I have trouble with impulse buys. Everything perishible is on the outer edge of the store. In summer we do the farmer's market for our fruits & veggies, so we just use the corner store for dairy (our corner store has cheaper dairy than the supermarket, fwiw)
Â
I definitely save money this way. However, I couldn't ever do the big shop with family in tow. DD (2.5) comes with me for the quick shops sometimes, but DP keeps the kids home for the big shop. I have twin infants and DD, so even if the kids were perfect it'd take me six years to chat with every damn person in the whole store about the kids (we get stopped ALOT when we're out with the babies). And the kids would not be perfect.Â