Hi-tech ink perfects egg boiling

Monday 31st July, 2006
Image:Hi-tech ink perfects egg boiling

The age-old argument over the best way to cook the perfect boiled egg could be a thing of the past thanks to a new hi-tech ink logo going on shells.

After cooking begins, an invisible, temperature-sensitive thermochromic print appears in black to indicate when an egg is soft, medium or hard-boiled.

The eggs, developed by UK assurance scheme Lion Quality, will be sold in three different types of cartons.

Source: BBC

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