The Auckland District Health Board's manager of nutrition services, Penny King, said hospital cooks carefully followed menu standards written for all meals.
She said there was no Mediterranean meal choice.
"The photo appears to show a pureed meal.
"We regularly prepare pureed food for patients who are unable to swallow easily.
"If this patient did not require a pureed meal it is possible there was a mix-up on this occasion ... we are sorry to hear that one of our patients found [her] food unappetising."
Patients with concerns about their food were encouraged to discuss the problem with their nurse, who could order a more appropriate meal.
Alternatively, patients could ask to speak to a hospital dietician and have a diet plan tailored to their needs, Ms King said.
Patients were surveyed twice a year about hospital meals and their views were considered when designing future menus.
"Each day ADHB serves about 3000 meals for patients with up to 90 different combinations of dietary requirements.
"We do receive complaints from time to time ... but not to such an extent that we have felt it necessary to dramatically change the menu."