I checked the internet a bit, see what goes in it..
Burger King Milkshake source 1:
milkfat and nonfat milk, sugar, sweet whey, high fructose corn syrup, corn syrup, natural and artificial vanilla flavour, guar gum, mono and diglycerides, cellulose gum, sodium phosphate, carrageenan and natural flavours from plant sources.
The strawberry shake syrup contains: corn syrup, water, high fructose corn syrup, citric acid, artificial flavour, sodium benzoate (preservative) and coloured with red #40.
In his book Fast Food Nation, Eric Schlosser looks at the typical ingredients in a Burger King strawberry milkshake: amyl acetate, amyl butyrate, amyl valerate, anethol, anisyl formate, benzyl acetate, benzyl isobutyrate, butyric acid, cinnamyl isobutyrate, cinnamyl valerate, cognac essential oil, diacetyl, dipropyl ketone, ethyl acetate, ethyl amyl ketone, ethyl butyrate, ethyl cinnamate, ethyl heptanoate, ethyl heptylate, ethyl lactate, ethyl methylphenyl-glycidate, ethyl nitrate, ethyl propionate, ethyl valerate, heliotropin, hydroxyphenyl-2-butanone, a-ionone, isobutyl anthranilate, isobutyl butyrate, lemon essential oil, maltol, 4-methylacetophenone, methyl anthranilate, methyl benzoate, methyl cinnamate, methyl heptine carbonate, methyl naphthyl ketone, methyl salicylate, mint essential oil, neroli essential oil, nerolin, neryl isobutyrate, orris butter, phenethyl alcohol, rose, run ether, y-undercalctone, vanillin and solvent
(THIS ARE THE ARTIFICIAL INGREDIENTS)There are animal by-products in the milkshakes.
The average strawberry milkshake at a fast-food restaurant contains more than 50 different chemicals, many of which could only be deciphered by a scientist. In addition to these four- and five-syllable words in the ingredient list, they also contain something called "natural flavoring," which, as aforementioned, may in fact come from nature, but not in the form that you'd expect.
The Food and Drug Administration insists that to claim the use of "natural ingredients" in a food product, the ingredients have to be derived from natural sources. Natural sources include herbs, spices, yeast, roots, fruits, vegetables, beef, chicken, and other animals. Therefore, the natural flavoring in your strawberry shake is probably not strawberry. In fact, we learned that many fast food chains do use animal products like gelatin to add taste and thickness to their milkshakes.
http://www.snopes.com/horrors/food/mcdshake.htmSorry for the Hijack