How do you make authentic italian pesto?

January 17, 2024

Ah, pesto – the perfect balance between the sweet, aromatic basil, rich nuts, sharp garlic and savoury cheese. Originating from Genoa in the Liguria region of Northern Italy, this green sauce has become a beloved staple in Italian cuisine, and rightfully so. It adds a burst of flavour to any dish, finding a home in everything from pasta to sandwiches, salads to pizza.

But what goes into creating this richly flavoured condiment? Today, we’ll walk you through the process of making authentic Italian pesto, focusing on the traditional ingredients and methods that have been used for centuries. Grab your mortar and pestle; let’s get started!

A lire également : What’s the secret to a perfectly baked quiche?

Understanding the Ingredients

Before you start the process of making pesto, it’s vital to understand the ingredients that go into it. This is not just about knowing what you’re adding to your sauce, but also appreciating the role each component plays in creating the final product.


Basil is the star of the show in pesto. The aromatic herb lends a sweet, yet slightly peppery taste that cannot be replicated by any other ingredient. It’s recommended to use fresh basil leaves for a robust and vibrant flavour.

A lire aussi : How do you prepare a classic italian affogato?


Traditionally, pine nuts are used in authentic Italian pesto. Pine nuts add a subtle, buttery taste and creamy texture to the sauce. While some recipes might substitute pine nuts with walnuts or almonds, purists will argue that pine nuts are irreplaceable.


Garlic is another key ingredient, lending pesto its distinctive pungent flavour. A single clove is typically enough for a traditional pesto recipe, although you may adjust to taste.


The cheese used in pesto is usually Parmigiano Reggiano, a hard, granular cheese with a rich, sharp flavour. Sometimes, a combination of Parmigiano Reggiano and Pecorino Romano is used for an extra zing.


Last but not least, olive oil. Good quality extra virgin olive oil will provide a smooth, fruity foundation for the other ingredients.

Making the Pesto

Now that you understand the ingredients, let’s move on to the process of making pesto. Remember, the aim here is to achieve a harmonious blend of flavours, so pay close attention to the ratios and techniques.

Preparing the Ingredients

Wash the basil leaves and pat them dry to remove any moisture. This is essential as any water in the pesto might lead to a diluted taste. Peel the garlic, grate the cheese and measure out your olive oil and pine nuts.

Using the Mortar and Pestle

The traditional method of making pesto involves using a mortar and pestle. This method, while labour-intensive, allows the oils from the basil and pine nuts to be released slowly, resulting in a more intense and complex flavour profile.

Begin by pounding the garlic with a pinch of coarse salt. Once it’s crushed, add the pine nuts and crush them until a paste forms. Next, add the basil leaves a handful at a time and continue to pound until you have a smooth paste. Finally, mix in the grated cheese.

Adding the Olive Oil

Once all the ingredients are well combined, it’s time to add the olive oil. Pour it in gradually, stirring constantly to ensure it emulsifies with the other ingredients. The end result should be a creamy and cohesive sauce.

Adjusting the Recipe

While tradition dictates a specific set of ingredients and techniques, you might prefer to tweak your pesto to suit your personal preferences.

Adding Other Ingredients

While basil, pine nuts, garlic, cheese and olive oil form the base of the pesto, you can always add other ingredients to it. Some popular additions include sun-dried tomatoes, roasted red peppers, or even spinach.

Using a Food Processor

If you don’t have a mortar and pestle or if you’re pressed for time, a food processor can be a good alternative. However, be aware that this method will result in a different texture and may slightly alter the flavour profile of the pesto.

Serving the Pesto

Finally, let’s look at different ways to serve your freshly made pesto. Although it’s most commonly served with pasta, pesto’s versatility makes it suitable for a wide range of dishes.


Toss your freshly made pesto with cooked pasta for a quintessential Italian dish. Whether it’s spaghetti, linguine, or fusilli, the pesto will coat the pasta and infuse every bite with its rich, distinct flavours.

Bread and Pizza

Spread some pesto on a slice of crusty bread for a quick snack, or use it as a base for your homemade pizza. The warm, toasted bread will bring out the sauce’s aromatic flavours.

Salads and Vegetables

Mix some pesto into a salad dressing to spruce up a simple green salad or use it as a marinade for grilled vegetables. The vibrant, zesty flavours will liven up even the most mundane of vegetables.

With these steps and methods, you are now equipped to make your own authentic Italian pesto. Remember, the key to a great pesto lies in the quality of the ingredients and the love you put into making it. Happy cooking!

Preserving Your Pesto

The beauty of a good pesto recipe is that it not only offers a burst of flavour but can also be made in advance and stored for future use. Here is how you can preserve your pesto sauce to enjoy its vibrant taste longer.


The simplest way to store basil pesto is in the refrigerator. Place your pesto in an airtight container, making sure to smooth the surface. Pour a thin layer of extra virgin olive oil on top to prevent it from browning. This protective layer of oil creates a seal that keeps out air, maintaining the sauce’s fresh flavour and colour. Refrigerated this way, your pesto can last up to a week.


For longer preservation, freezing is the best option. Pour your pesto into ice cube trays and freeze. Once solid, these pesto cubes can be transferred to a freezer bag or airtight container and stored for up to six months. The convenience of pesto cubes is that you can take out just the amount you need and return the rest to the freezer, thus reducing waste and ensuring you always have a cube of fresh-tasting Italian pesto at hand.

Conclusion: The Joy of Making and Eating Authentic Italian Pesto

Creating your own authentic Italian pesto can truly be a rewarding experience. It allows you to appreciate the harmony of simple, fresh ingredients – the aromatic basil leaves, crunchy pine nuts, sharp garlic, savoury Parmigiano Reggiano, and fruity olive oil – coming together to create a flavourful pesto alla genovese that is more than the sum of its parts.

The mortar and pestle technique, though laborious, is rewarding, as it slowly releases the oils from the basil and pine nuts, resulting in a more intense and complex flavour profile. But even if you use a food processor, your homemade pesto will still have a depth of flavour and freshness that store-bought versions can’t match.

Finally, the joy of making pesto doesn’t end at the preparation. Whether you are tossing it with pasta, spreading it on bread, stirring it into salads, or simply eating it by the spoonful, every bite of your homemade pesto sauce is a testament to your effort and the age-old Italian tradition that you are keeping alive.

So, embrace the process of making your own pesto, savour the flavours, and share this delightful sauce with friends and family. After all, good food is meant to be shared. And remember, the secret to a great pesto lies in the quality of your ingredients and the love you pour into making it. Buon appetito!