Yes, milk fat is soluble in fat.
Milkfat, also known as butterfat, is a complex mixture of lipids that is naturally present in milk. A key characteristic of these lipids is their fat solubility. This means that milk fat dissolves in fats, oils, and nonpolar solvents, but not in water. This property is crucial to its role as a carrier of fat-soluble vitamins (A, D, E, and K) and other bioactive lipids essential for health.