Unilever, the company behind Ben & Jerry’s, Wall’s and Magnum ice cream, is developing an ambient ice cream in an attempt to reduce greenhouse gas emissions.

The low-carbon product, which is being designed with Cambridge University, would be sold at room temperature but then frozen at home – saving the energy normally used to store, freeze and transport ice cream.

“The key question which has yet to be fully answered is how do you ensure that when the ambient ice cream is frozen at home it will have the right microstructure to produce a fantastic consumer experience,” a Unilever spokesman said.