She said a lot of food products had changed over the years and it was difficult at a glance to know which ones were healthy.
She will break down the different elements in food and each meal would contain a balance of vegetables, protein and carbohydrates.
Recipes include pasta dishes, sides that can be paired with meat and quick and easy options.
The classes are aimed at people who have lost confidence in the kitchen or people who had lost their partner and are now cooking alone.
"We've had a lot of success with men in particular, whose partners have passed away and they're now having to cook for the first time in their lives.
"Rotorua will be the first city to get this programme outside of Auckland thanks to the funding we've received."
The classes will be three hours each held over four consecutive weeks, starting at 10am at the Linton Park Community Centre.
The first round of classes have started and there is still opportunity to take part in the second which will start on October 8.
Age Concern Rotorua manager Rory O'Rourke said the classes were a great opportunity for people who wanted to learn more or wanted to get out and socialise.
"We have been recommending it to our members, it's a really good opportunity."