Where does the McFlurry's trans fat come from?

The McFlurry has 0.5 to 1.0 grams of trans fat per serving according to the McDonald's USA Nutrition Facts for Popular Menu Items. Where is this coming from?

The individual toppings (Reese's, OREO, Rolo, M&M) have no trans fat according to their respective manufacturer's nutrition facts.

The vanilla reduced fat ice cream is used in the cones and sundaes, but they have 0g trans fat.

So if it is not the soft serve ice cream and it is not the toppings then what?

Vanilla Reduced Fat Ice Cream:

Milk, sugar, cream, nonfat milk solids, corn syrup solids, mono- and diglycerides, guar gum, dextrose, sodium citrate, artificial vanilla flavor, sodium phosphate,

carrageenan, disodium phosphate, cellulose gum, vitamin A palmitate.

Oreo® Cookie Pieces:

Sugar, enriched flour (wheat flour, niacin, reduced iron, thiamin mononitrate, riboflavin, folic acid), vegetable oil (may contain one or more of the following: high oleic

canola oil, palm oil, canola oil and/or soybean oil), cocoa (processed with alkali), high fructose corn syrup, corn starch, leavening (baking soda, calcium phosphate),

salt, soy lecithin (emulsifier), artificial flavor (vanillin), chocolate.

Reese's Peanut Butter Cup® Candy Pieces:

Milk chocolate [sugar, cocoa butter, chocolate, nonfat milk, milkfat, lactose, soy lecithin and PGPR (emulsifiers)], peanuts, sugar, dextrose, chocolate, nonfat milk,

contains 2% or less of the following: tapioca maltodextrin, salt, vegetable oil (cocoa butter, palm, shea, sunflower and/or safflower oil), whey, milkfat, soy lecithin,

TBHQ (preservative), artificial flavor (vanillin).

M&M® Mini Milk Chocolate Candies:

Milk chocolate (sugar, chocolate, skim milk, cocoa butter, lactose, milkfat, soy lecithin, salt, artificial flavors), sugar, contains 2% or less of the following: corn starch,

corn syrup, colored with (yellow 5 lake, red 40 lake, blue 1 lake, yellow 6 lake, blue 2 lake, yellow 5, red 40, blue 1, yellow 6, blue 2), dextrin.

Rolo® Chopped Shells (Topping):

Milk chocolate [sugar, nonfat milk, cocoa butter, chocolate, lactose, milkfat, soy lecithin, PGRP (emulsifier), vanillin, artificial flavor].

Hot Caramel Topping:

Corn syrup, sweetened condensed milk (milk, sugar), high fructose corn syrup, butter (cream, salt), sugar, water, disodium phosphate, pectin, salt, potassium sorbate

(preservative), artificial flavors (vanillin, ethyl vanillin).