Inside this elegant rose gold-coloured tin you¿ll find Harvey Nichols I Love Chocolate, which combines crisp caramel biscuits with moreish salted caramel pieces and then covers them in thick creamy milk chocolate. It¿s a highly addictive combo. A study by the University of Florida has shown that salted caramel not only causes the brain to release drug-like chemicals but because you taste something new in every bite, the pleasure you receive from eating it keeps rising. In essence, we¿re powerless against the charms of this wonder combination. And then we put chocolate on them. You¿ve been warned.