After five minutes of frying the chicken pieces were left partially submerged by the water that came out of the meat.
When drained it was found the chicken had released around 180ml of water, or just under 20 per cent of the total weight of the uncooked chicken.
For Simpson, the amount of fluid being released from his chicken is unacceptable.
"You're trying to make a chicken stir fry but end up with chicken soup because Countdown Supermarkets load up their Barnwell Chicken with so much extra water to increase the sell weight. C'mon guys - fair play," he posted on Facebook.
TFW you're trying to make a chicken stir fry but end up with chicken soup because Countdown Supermarkets load up their...
Posted by Andrew Simpson on Saturday, 1 July 2017
Countdown spokeswoman Kate Porter said the company had spoken to its chicken suppliers and confirmed there was no added liquid in the fresh chicken.
The company was talking to Simpson directly to get more details about the product and how it was cooked so it could investigate further, she said.
The Commerce Commission warned two chicken producers this year over packaging representations about the size of chickens.
The Commission considered that Inghams and Tegel were likely to have made misleading representations about chicken size by including stuffing and marinade in the weight of chickens.