Worried about eating junk food stuffed with artificial colourings? Without colouring, frozen fries and crisps look too pale when cooked, but there’s no need to add synthetic chemicals to fries or potato chips, says Frito-Lay of Bern in Switzerland. It has found a way to dye them golden brown without using any artificial dyes (GB 2373987).
The potatoes are sliced, dried and fried in the usual way, then dried and de-oiled. Next, they are sprayed with an electrostatically charged mix of palm oil and a carotenoid, one of the compounds that make leaves look orange in the autumn. The…
