Pesto has been pointed out that pesto is essentially a combination of flavourful leaves, oily nuts, hard cheese, olive oil, garlic, salt and lemon juice; any ingredients meeting this description can produce a pesto-like condiment. "Pesto alla siciliana", sometimes called "pesto rosso" (red pesto), is a sauce from Sicily similar to "pesto alla genovese" but with the addition of tomato, almonds instead of pine nuts, and much less basil. "Pesto alla calabrese" is a sauce from Calabria consisting of (grilled) bell peppers, black pepper and more; these ingredients give it a distinctively spicy taste. Outside Italy, the household name "pesto" has
Pesto the regions of Liguria, Italy, and Provence, France. It was abundant in this part of Italy, though only when in season, which is why marjoram and parsley are suggested as alternatives when basil is lacking. Ratto mentions Dutch cheese (""formaggio olandese"") instead of pecorino sardo since Northern European cheeses were actually common in Genoa at the time, thanks to the centuries-long commercial trades of the maritime republic. This recipe for "pesto alla genovese" was often revised in the following years (a noted revision by Emanuele Rossi occurred in 1865, only a couple of years after Ratto's "Cuciniera"), and it shortly