I was in Trapani and Erice a few weeks ago. I loved two pasta I actually had in an Erice restaurant. One was with sardines. the other was with 'pesto alla Trapanese" sauce. I am having trouble finding this sauce in a jar. There is one place in Wisconsin you can order it on the internet. That's all I can find. Even in the Italian neighborhood of San Francisco I could not find it. Any ideas?
By the way, if you are not traveling by car in Sicily, I would stay in Trapani and just take the bus/cable car up to Erice on a day trip instead of staying in Erice.