Solent News & Photo Agency

Designers have created the world's first knife with a heated blade to solve the age old problem of cold butter not spreading properly on bread. The knife heats to 41.8 degrees Celsius after research found that is the optimum temperature to spread butter...A button on the handle activates the battery operated heating element and a flashing LED indicates it is on. Researchers created the knife together with bread baker Warburtons after a survey found it is the most desired breakfast innovation. SEE OUR COPY FOR DETAILS...The video can be viewed here:. ..Pictured: The Warburtons heated butter knife...© Solent News & Photo Agency.UK +44 (0) 2380 458800.

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