Fat content:

Half and Half: 10.5% to 18% Whole milk: 3.25% Reduced fat milk: 2% Semi-skim milk: 1.8% Low fat milk: 1% Skim milk: 0.0 to 0.5%

What is half and half? It is a simple blend of equal parts of whole milk and light cream. So milk and cream.

ref: http://www.howstuffcompares.com/doc/h/half-and-half-vs-milk.htm https://www.thekitchn.com/what-is-halfandhalf-ingredient-intelligence-205959 https://en.wikipedia.org/wiki/Cream