Yorkshire Liquorice sweet was first created by George Dunhill from Pontefract, who in the 1760s thought to mix the liquorice plant with sugar. Yorkshire and in particular the city of York played a prominent role in the confectionery industry, with chocolate factories owned by companies such as Rowntree's, Terry's and Thorntons inventing many of Britain's most popular sweets. Another traditional Yorkshire food is pikelets, which are similar to crumpets but much thinner. The Rhubarb Triangle is a location within Yorkshire which supplies most of the rhubarb to locals. In recent years curries have become popular in the county, largely due to
International Union for the Protection of New Varieties of Plants is known to consider open and un-restricted access to the genetic resources of protected plant varieties to be important to the continued development of new varieties. This opinion is indicated in the "breeders' exemption" clause of the Convention, as described above, and was reinforced in October 2005 in a reply to a notification from the Convention on Biological Diversity. In April 2003, the Convention on Biological Diversity asked the UPOV for comment on the use of Genetic Use Restriction Technologies (also known pejoratively as 'terminator genes') as they relate to the promotion of intellectual property rights. In the summary of