How To Make Pesto Sauce

Pesto sauce is a delicious condiment that originates from the Italian province of Genoa. Traditionally, pesto sauce is made with fresh basil leaves, pine nuts, garlic, Parmesan cheese, and olive oil. This rich, savory sauce is perfect for enhancing the flavors of pasta, meat, fish, vegetables, and even sandwiches.

If you’re a fan of this versatile sauce, you may be wondering how to make pesto sauce at home. In this article, we’ll outline a step-by-step guide on how to make homemade pesto sauce – from selecting the right ingredients to processing them to perfection. We’ll also answer some frequently asked questions about pesto sauce at the end.

Step 1: Select the Right Ingredients

The first and most crucial step in making pesto sauce is choosing the right ingredients. Here are the ingredients you’ll need to make traditional basil pesto sauce:

1. Fresh basil leaves: Pick fresh, tender basil leaves from the plant, trimming away any yellow or brown spots. Make sure the leaves are dry and cleaned thoroughly.

2. Pine nuts: Toasted pine nuts impart a nutty flavor and a crunchy texture to the pesto sauce. If you can’t find pine nuts, you can substitute them for walnuts, almonds, or cashews.

3. Garlic: Use one or two cloves of fresh garlic to add a fragrant kick to the pesto sauce. If you find garlic too strong, reduce the amount or omit it completely.

4. Parmesan cheese: Grate a cup of Parmesan cheese to give the pesto sauce a salty, nutty flavor. You can also substitute Parmesan cheese for Romano cheese or Pecorino cheese.

5. Extra-virgin olive oil: Use high-quality extra-virgin olive oil to provide the sauce with a smooth and creamy texture. Inferior-quality olive oils can make the pesto sauce taste rancid and gritty.

6. Salt and pepper: Season the pesto sauce with salt and black pepper to taste.

Step 2: Prepare the Ingredients

Once you’ve gathered all the ingredients, it’s time to prepare them for processing. Here’s how:

1. Toast the pine nuts: In a dry skillet over medium heat, toast the pine nuts until they turn golden brown and fragrant. Make sure to stir them frequently to avoid burning.

2. Peel the garlic: Remove the skins from the garlic cloves and chop them into small pieces.

3. Grate the Parmesan cheese: Use a box grater or a food processor to grate the Parmesan cheese into fine shreds.

4. Wash and dry the basil leaves: Rinse the basil leaves under cold running water and pat them dry with a clean kitchen towel.

Step 3: Process the Ingredients

Now comes the fun part – processing all the ingredients into a smooth and tasty pesto sauce. Here’s how to do it:

1. Add the pine nuts and garlic to a food processor. Pulse them several times until they are finely chopped, but not paste-like.

2. Add the basil leaves to the food processor and pulse them until they are coarsely chopped.

3. While the food processor is running, gradually pour the olive oil into the mixture until it reaches a smooth, creamy consistency.

4. Add the grated Parmesan cheese, salt, and pepper to the processor. Pulse the ingredients for a final time until the sauce is well combined.

5. Taste the pesto sauce and adjust the seasoning to your liking. If you find the sauce too thick, you can thin it out with a little bit of warm water or more olive oil.

Step 4: Store and Serve

Congratulations – you’ve made your own homemade pesto sauce! Here are some tips on how to store and serve it:

1. Store the pesto sauce in an airtight container in the refrigerator for up to a week. You can also freeze the sauce in an ice cube tray and store the frozen cubes in a freezer bag for up to six months.

2. Serve the pesto sauce as a pasta sauce, spread it on sandwiches, or use it as a marinade for chicken or fish.

3. Experiment with adding your own twist to the classic pesto sauce recipe. You can try using different herbs like cilantro or parsley, different nuts like almonds or cashews, or even different cheeses like feta or blue cheese.


1. Can I make pesto sauce without a food processor?

Yes, you can make pesto sauce without a food processor. You can use a mortar and pestle to crush the ingredients together, or you can finely chop the ingredients by hand and mix them together in a bowl.

2. Can I use dried basil instead of fresh basil?

While the original recipe calls for fresh basil, you can use dried basil in a pinch. Use one tablespoon of dried basil for every two cups of fresh basil called for in the recipe. However, keep in mind that dried basil is less flavorful than fresh basil, so the pesto sauce may not be as tasty.

3. Can I make vegan pesto sauce?

Yes, you can make vegan pesto sauce by omitting the Parmesan cheese from the recipe. You can substitute the cheese with nutritional yeast flakes, which give the sauce a cheesy flavor. You can also use plant-based milk or cashews instead of cheese to thicken the sauce.

4. How can I thin out pesto sauce?

If you find the pesto sauce too thick, you can thin it out with a little bit of warm water or more olive oil. Add the liquid gradually until the sauce reaches the desired consistency.

5. How long does pesto sauce keep in the refrigerator?

Pesto sauce can keep in the refrigerator for up to a week. Make sure to store it in an airtight container to prevent it from oxidizing and discoloring.

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