Acciughe sotto pesto is a traditional dish hailing from Siena. It's made with salted anchovies, parsley, garlic, chili peppers, and extra-virgin olive oil. The anchovies are rinsed in vinegar, then laid next to one another in a deep dish. They're topped with a mixture of garlic, parsley, and chili, with an additional generous drizzle of olive oil.

When completely covered in olive oil, the dish is left to rest for about 12 hours. Later on, the anchovies can be served on their own as a simple snack or on toasted bread. In Siena, it can be found everywhere, not only in restaurants, but also in bars and grocery shops.