Under Italian law, dry pasta can only be made with which type of wheat?
In 1967, Italy passed a so-called "pasta purity" law, requiring all pasta manufactured within its borders to be made specifically with durum wheat. The grain creates pasta that is firmer than other wheat varieties, though it is also more expensive. In the 1980s, the country sought to crack down even further on non-durum pasta, attempting to ban all imports that didn't adhere to perfect pasta purity. That ruling was overturned by the European Economic Community's Court of Justice, but true, home-grown Italian pasta is still only made with durum wheat.
Source: BBC