Evoca Cola was the first and still is the only cola in the world to contain a tasteless extract of black seed ("Nigella sativa"). After initial piloting in London, it was advertised on cable channels with its 'Power of Black Seed' and 'The Original Black Seed Cola' slogans. It relaunched its brand in June 2005 to challenge global soft drink manufacturers such as Coca-Cola and Pepsi-Cola with its own 'Evoca Taste Challenge'. Although Evoca Cola is very similar in taste to Coca-Cola and Pepsi-Cola, it differs in its composition by being made with natural mineral water and with the addition of a special tasteless black seed extract.