The first step in the digestion of fat is its melting. Crisco melts at a lower degree of heat than body temperature. Because of its low melting point, thus allowing the digestive juices to mix with it, and because of its vegetable origin and its purity, Crisco is the easiest of all cooking fats to digest.
When a fat smokes in frying, it "breaks down," that is, its chemical composition is changed; part of its altered composition becomes a non-digestible and irritating substance. The best fat for digestion is one which does not decompose or break down at frying temperature. Crisco does not break down until a degree of heat is reached above the frying point. In other words, Crisco does not break down at all in normal frying, because it is not necessary to have it "smoking hot" for frying. No part of it, therefore, has been transformed in cooking into an irritant. That is one reason why the stomach welcomes Crisco and carries forward its digestion with ease.
Working Towards an Ideal
A part of the preliminary work done in connection with the development of Crisco, described in these pages, consisted of the study of the older cooking fats. The objectionable features of each were considered. The good was weighed against the bad. The strength and weakness of each was determined. Thus was found what the ideal fat should possess, and what it should not possess. It must have every good quality and no bad one.
After years of study, a process was discovered which made possible the ideal fat.
The process involved the changing of the composition of vegetable food oils and the making of the richest fat or solid cream.
The Crisco Process at the first stage of its development gave, at least, the basis of the ideal fat; namely, a purely vegetable product, differing from all others in that absolutely no animal fat had to be added to the vegetable oil to produce the proper stiffness. This was but one of the many distinctive advantages sought and found.
Not Marketed Until Perfect
It also solved the problem of eliminating certain objectionable features of fats in general, such as rancidity, color, odor, smoking properties when heated. These weaknesses, therefore, were not a part of this new fat, which it would seem was the parent of the Ideal.