Dunkin’ breakfast sandwiches — whether it’s the Sourdough Breakfast Sandwich or Wake-Up Wrap — use a folded egg patty that’s more than just eggs. The mix includes egg whites, yolks, water, soybean oil, cornstarch, xanthan gum, and other stabilizers.
In 2016, Dunkin’ cut down on fillers to include “more egg,” but in 2019, a TikTok video surfaced showing someone banging a rock-hard frozen egg patty on the counter, saying, “This is how Dunkin’s eggs look like.”