What makes a better butter It’s all in the nuts Spanish peanuts are used in snack mixes, peanut brittle, and various confectionary blends for a reason. They have a robust peanut taste that shines through. So when it comes to peanut butter, Spanish peanuts produce the richest-tasting peanut flavor. Don Quixote is the peanut-butteriest peanut butter you will ever have the pleasure to enjoy! Beyond Great Taste: Protein and Antioxidants Protein: The protein in Spanish Peanuts is unusual among vegetable proteins. It contains all essential amino acids. Most importantly, it contains ample amounts of two essential amino acids that are usually under-supplied or absent from vegetable proteins.