Through the ages, artists have created pictures in many different ways - but Johannes Cordes has had sweet success with a very unusual technique. He uses gummy bears as an art medium. From portraits of Marilyn Monroe and Mona Lisa to JFK, the 57-year-old from Germany, uses thousands of the gelatinous treats to make his colourful masterpieces. A fan of pop art, he has recreated works by Andy Warhol, as well as those done by the masters. Each portrait takes from 100 to 240 hours to complete - and if that was not painstaking enough, Mr Cordes also has to resist the temptation to gorge on the candy. He's used millions of gummy bears so far in his work and gets through around three tons of them a year which equates to 200 bags a week.His version of Warhol's Monroe required 3,200 bears alone. Due to Haribo's limited range of six colours, he has even devised his own technique of coating them in various shades, and preserving them.