I’m a huge fan of pesto sauce. Pesto originated from Northern Italy, Genoa to be precise. Traditionally, it is made with sweet basil leaves, crushed garlic, pine nuts, parmigiana-reggiano (parmesan cheese) and lots of good quality olive oil. Besides basil pesto, you might have come across other versions i.e. sun-dried tomato, anchovies, pistachio, etc...