Xinmin Secondary School student Ang Yi Pin, 14, places a piece of cotton candy on her team's ice-cream creation made from sweet potatoes and passion fruit.

The creation - called the Metamorphic - was inspired by DC Comics superhero Metamorpho, who can transmute his body into any element.

The Xinmin team, which won third prize, was among 11 secondary school teams that took part in the Nanyang Polytechnic (NYP)-Swensen's Ice Cream Competition, held at the polytechnic yesterday. This is the 10th year the event has been held.

It challenges students to use innovative ingredients to create their desserts, while allowing them to learn about food science.

Whitley Secondary School won the first prize with the Incredible Salted Egg Vegetable Curry ice cream and Anglo-Chinese School (Barker Road) was second with The Fantastic Four.