[6] [8] Contains 2% or Less of: Milk Fat, Lecithin, Disodium Phosphate, Baking Soda, Vanillin (Artificial Flavor)[10] Contains 2% or Less of: Cocoa Processed With Alkali, Whey, High-fructose corn syrup, Chocolate, Lecithin, Baking Soda, Salt, Natural Flavors, Artificial Flavor, Tocopherols (To Maintain Freshness), PGPR (Emulsifer)[12] Contains 2% or Less of: Lecithin, Salt, Malt, Yeast[14] Contains 2% or Less of: Lecithin, Vanillin (Artificial Flavor), PGPR[18] Contains 2% or Less of: Corn Syrup Solids, Dextrose, Palm Kernel Oil, Corn Syrup, Artificial Color, Yellow 6 Lake, Yellow 5 Lake, Red 40 Lake, Blue 1 Lake, Cornstarch, Salt, Confectioner's Glaze, Lecithin, Modified Cornstarch, Carnauba Wax, Vanillin (Artificial Flavor)[20] The Hershey Process milk chocolate in these bars uses fresh milk delivered directly from local farms.

The process was developed by Milton Hershey and produced the first mass-produced chocolate in the United States.

This produces butyric acid, a compound found in substances such as Parmesan cheese and butter, [25] which stabilizes the milk from further fermentation.

although the presence of the acid has caused the flavour to be considered unappetising by those more accustomed to chocolate brands which do not include it.

The Kashruth Division of the Union of Orthodox Jewish Congregations of America approves all flavors for consumption by observant Jews, with OU Kosher status.