Pietro Ferrero, who owned a bakery in Alba, Piedmont, an area known for the production of hazelnuts, sold an initial batch of 300 kilograms (660 lb) of "Pasta Gianduja" in 1946. At the time, there was very little chocolate because cocoa was in short supply due to World War II rationing.[3] So Ferrero used hazelnuts, which are plentiful in the Piedmont region of Italy (northwest), to extend the chocolate supply. This "Pasta Gianduja" was originally a solid block, but Ferrero started to sell a creamy version in 1951 as "Supercrema".[4] In 1963, Ferrero's son Michele Ferrero revamped Supercrema with the intention of marketing it throughout Europe. Its composition was modified and it was renamed "Nutella". The first jar of Nutella left the Ferrero factory in Alba on 20 April 1964. The product was an instant success and remains widely popular.[5] In 2012, French senator Yves Daudigny proposed a tax increase on palm oil from €100 to €400 per metric tonne. At 20 percent, palm oil is one of Nutella's main ingredients and the tax was dubbed "the Nutella tax" in the media.[6] World Nutella Day is February 5.[7] On 14 May 2014, Poste italiane issued a 50th anniversary Nutella commemorative stamp.[8][9] The 70 Euro cent stamp was designed by Istituto Poligrafico e Zecca dello Stato and features a jar of Nutella on a golden background.[8] Ferrero held a Nutella Day on 17 and 18 May to celebrate the anniversary.[10]