The "best" oil is one that meets three conditions:
1. It does not burn at the temperatures at which you intend to use it,
2. It contains a reasonably balanced ratio of fatty acids,
3. It is affordable.
Refined olive and canola oils are closest to these conditions. Although sunflower oil has a higher smoke point, it contains a high proportion of omega-6 fatty acids, which is a disadvantage given their excess in the Western diet. Ghee indeed has a high smoke point and is therefore suitable for warm cooking, but it does not have such a favorable ratio of fatty acids (saturated fats dominate).
However, it is always sensible to approach the choice of oils pragmatically; it is not absolutely necessary to target just one option. One of the main principles of rational eating is the factor of variety, so it is beneficial to combine sources.
The richest source of butyric acid is ruminant fat, with the highest concentration found in butter (which can contain up to 3-4% of this fatty acid) and in some fermented dairy products (e.g., parmesan). You will also find butyric acid in beverages fermented with kombucha (the more fermented the liquid, the more of this fatty acid it contains).
Butyric acid has proven health benefits, particularly in relation to gut microbiome function, where it supports anti-inflammatory processes. In certain cases, it can be considered a supportive therapeutic agent, though caution is needed regarding the sources used. For example, as part of milk fat, it is accompanied by a high proportion of other saturated fats, making this source potentially risky in terms of excessive saturated fat intake. It appears advantageous to moderately incorporate selected dairy products into the diet along with the aforementioned kombucha beverages and to use probiotic cultures that ensure butyric acid production in the digestive tract. The question remains whether to choose monocultures in the form of supplements, whose consumption does not support microbiota diversity, or to prefer fermented products, where selected microorganisms themselves produce this important substance.
Each type of mammalian milk contains a different composition of fats, with the highest proportion of butyric acid found in cattle. However, this does not necessarily mean that only this source should be preferred - for instance, goat fat contains a spectrum of trans fatty acids that strongly support immune system activity. Therefore, every food should be perceived holistically, as it possesses a range of advantages and disadvantages, and an overly singular focus on one factor can be strongly counterproductive in a holistic view.
Questions answered by
Mgr. Martin Jelinek
Lecturer and author of the educational system
Nutrition educator, lecturer, and author of the educational system and the ZOF learning application.
Mgr. Martin Jelínek has been systematically involved in nutrition education since 1999. He is the founder of ATAC, the educational company behind NutriCourses, and the author of an educational system focused on nutrition, healthy lifestyle, and the practical application of nutrition knowledge.
He graduated from the Faculty of Science at Masaryk University in Brno. Throughout his professional career, he has combined nutrition, education, and the practical application of acquired knowledge. His educational system also includes the ZOF (Zone of Optimal Functioning) learning application, where students turn theory into practical work with meal plans.
In 2007, he launched the first intake of a six-month course focused on the education of nutrition advisors. Over time, this course became the foundation for the further development of the educational system and a range of specialised courses.