To make sugared almonds that don’t stain your fingers, confectionery maker Mars (WO 02/051257) covers a central core of chocolate-coated almond with a glaze of sugar and titanium dioxide to make it look bright white. Then up to 12 more layers are applied, variously made from polysaccharide syrup, glucose, clear syrup, coloured syrup and an edible wax polish. Each layer is individually baked, with some getting colour by absorbing particular wavelengths of white light reflected from the titanium dioxide core. But all the outer layers are colourless, so they don’t leave a stain.
More from New Scientist
Explore the latest news, articles and features
Technology
Google shouldn’t be pressuring schools to use its AI
91ɫÇéƬ
Technology
Australia’s social media ban faces high court challenge
News
Technology
The nuclear waste repository in Finland designed to outlast modern civilisation
Features
Technology
How did the biggest crypto heist in history just happen?
News
Popular articles
Trending New Scientist articles