I find this question kind of silly, but it's a good "placeholder" for anecdotal questions that are popular with data-blogs and data-driven journalism.
See, for example, the "Dear Mona" column at fivethirtyeight.com.
To randomly select two:
So, I suspect you'll have to collect the data yourself.
Post an online survey on /r/SampleSize
For geographical, aggregate data, contact Italian restaurants around the world with an email describing the project and a link to a simple web form. If you
spam send to enough restaurants, you could have an interesting dataset. I know you are involved with Wikivoyage, and perhaps you can extract
Pay a very little for a micro-advertising campaign. Google is the major player, but I think for this project a good medium would be Twitter. You could promote tweets to target regions, language-groups, or user-types, and those tweets would send users to a online survey. A cool thing is that once you start even a tiny advertising campaign, you get to see analytics for all your tweets (even when the campaign is over).
Create a twitter-bot that searches for the term "spaghetti" or something, then responds to those tweets with a link to an online form.
Conduct polls on food blogs, forums, or SeasonedAdvice.
Ask [Mona]. As a plus, their datasets have friendly licenses.
And in case anyone is curious:
''Most restaurants (and hostesses) that feature pasta provide guests with a large spoon as well as the knife and fork. The fork is used to spear a few strands of spaghetti, the tips are placed against the spoon, which is held on its side, in the left hand, and the fork is twirled, wrapping the spaghetti around itself as it turns. If no spoon is provided, the tips of the fork may be rested against the curve of the plate.''
''The New Emily Post's Etiquette,'' Elizabeth L. Post, 1975 By CRAIG CLAIBORNE