Other types of pumpkin seed oil are also marketed worldwide. High-temperature roasting improves the aromatic quality of pumpkin seed oil. An example of this is pumpkin seed oil. Pumpkin seed oil serves as a salad dressing. The story ends as the witch plants another pumpkin seed. The typical Styrian dressing consists of pumpkin seed oil and cider vinegar. This was written about in the book "The Deltoid Pumpkin Seed," by John McPhee (). Pepita, or pumpkin seed, is the edible seed of pumpkins or related squashes. Pumpkin seed oil is a culinary oil, used especially in central Europe. Steven, using his power to create sentient plants, licks a pumpkin seed. AEREON 26, tested in 1971, was described in John McPhee's "The Deltoid Pumpkin Seed". Pumpkin seed oil has an intense nutty taste and is rich in polyunsaturated fatty acids. Examples of dichromatic substances are pumpkin seed oil, bromophenol blue, and resazurin. Pumpkin seed oil contains fatty acids, such as oleic acid and alpha-linolenic acid.