Choosing own-brand products can also save money, with Lowe noting that many supermarket labels are produced by the same manufacturers as well-known brands.
This morning on Kildare Today, John Lowe of Money Doctors shared practical advice on cutting the cost of the weekly food shop.
His core message was simple but often overlooked: plan ahead.
Setting out meals for the week reduces impulse buys, keeps you organised, and ensures you only buy what you actually need.
Lowe also advised checking cupboards and the fridge before shopping, clearing out anything past out of date, and setting a weekly budget - especially with Christmas approaching.
The more you stick to it, he said, the easier it becomes.
If you do pick up an impulse item, he suggests trying to work it into meals rather than letting it go to waste.
He also highlighted coupons, loyalty schemes and bulk buying where it makes sense - but not for perishables.
Choosing own-brand products can also save money, with Lowe noting that many supermarket labels are produced by the same manufacturers as well-known brands.
He said frozen foods are another strong option: affordable, convenient, and ideal for out-of-season fruit and veg.

Cost Motor Insurance Continues To Rise, With Insurance On A Car Now Averaging Over €650
A New Bill To Recognise Unborn Children As Road Crash Victims Launched
Calls To Abolish The Sub-Minimum Wage Rate For Those Under 20
Commander Alex Quigley Report's High Morale Among Irish Troops In Lebanon
Three People Arrested Over Suspected Murder Of William Delaney Released Without Charge
Council Acquired Seven Derelict Properties Through Compulsory Purchase Orders Last Year
Investigations Continue Into Beauty Brands Sephora And Benefit Over Marketing Issues
Parents Association Call For Urgent Action Over "Unsafe" Maynooth School Car Park