I made marinara sauces using 4 celebrity chefs' recipes, and the best had an unexpected secret ingredient

Using whole, peeled tomatoes in marinara can work out nicely, as they break down during simmering, giving the sauce a well-rounded texture.

Alex Guarnaschelli's marinara achieves a great balance of flavors, with red pepper flakes for heat, sweetness from carrots, and the richness of Parmesan enhancing each bite.

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