A detailed look at Is Pesto a Sour, covering in-depth facts.

Alfredo, vodka and pesto sauces are higher in fat and calories than most tomato-based sauces. … Pesto sauces are high in fat, but it’s mainly healthy unsaturated fat from vegetable oil and pine nuts – these are healthy fats. There will be some saturated fat if Parmesan cheese is added.