1963, University of Oklahoma Medical Center, Diet Manual, →OCLC, page 99:
An acid ash or neutral ash diet may be prescribed to promote diuresis in nephritis and some types of cardiac diseases.
1937, Julian Deigh Boyd, Nutrition of the Infant and Child, National Medical Book Company, →OCLC, page 67:
The first group includes the meats, grains and vegetable proteins; milk is an important example of a neutral ash food; most fruits and vegetables exemplify the basic ash foods.
1996, Rosalinda T. Lagua, Virginia S. Claudio, “Diet, ash”, in Nutrition and Diet Therapy Reference Dictionary, 4th edition, Springer, →ISBN, page 83:
In general, cereals and protein-rich foods have a predominance of the acid-forming elements. Fats, oils, and sugars give a neutral ash. Milk, fruits, and vegetables have a preponderance of the basic-forming elements.
