PREGNANT women are being recruited by Tesco to help sniff out the world's best new wines -- because they have better sense of taste and smell.

Wine buyers at Tesco stumbled across the secret recently after four of the team became pregnant and found their taste buds had become enhanced.

Now, in an operation codenamed Cot (correct) du Rhone, pregnant women will be asked to join regular wine tastings at Tesco stores across the country.