Shake Shack fries contain dimethyl polysiloxane, TBHQ, and four types of seed oils, including partially hydrogenated soybean oil.

“they have 16 one six ingredients so they're beating McDonald's by a few ingredients but a lot of the same ingredients are in the Shake Shack fries that are in the McDonald's fries you've got Silly Putty ingredients you've got the dimethyl polysiloxane in these fries from the fryer oil the anti foaming agent you've got tbhq that preservative that's Limited in Europe that's potentially cogenic in animals you've got four different types of seed oils including Hy partially hydrogenated soybean oil”