Sometimes hit or miss depending on the staff but often times staff is knowledgable on their drinks. Most times they are willing to show/read packaging and ingredients in their beverage mixes. Like all places, chance of cross contamination since they do use cookie crumb toppers on some beverages. They also have complete allergen list on website menu.
Update:Caribou has changed their packaging options on their gluten free breakfast sandwiches. They are no longer sealed to prevent contamination when they are warmed in the oven, which is also used to warm gluten containing items. Unfortunately, these products are no longer safe for people who are sensitive to cross contamination, so I will not be eating these again:(. As for drinks, many can be made gluten free. Milk foamers and blenders are washed after each drink, but there is still a risk of cross contamination as Caribou does serve gluten containing items in house. These drinks are not labeled on the menu, but an allergen information book can be provided if you ask for it. The staff are also quite knowledgeable about gluten free items and cross contamination issues.
I go to Caribou a lot and am very specific about cross contamination in my diet. Their blended drinks arent safe because the blenders are contaminated. If you look on their app though it'll tell you the allergens of each drink. I'm pretty sure the coolers are all also not safe. I always get turtle mochas and am fine.
This location is inside of the Cashwise grocery store. Many of their drinks can be made GF. The staff at this location is usually really helpful checking with ingredients but the ingredients are also available on their app or website. Make sure you check ingredients for drink toppings too. They have a very delicious GF breakfast sandwich. It’s spinach, artichoke, egg, and provolone cheese on a GF English muffin style bread. They also have a bacon and Gouda egg soufflé that is gf. (I like the sandwich best though). The sandwich and soufflé are usually pre-wrapped in individual packages and warmed in the same package so they don’t touch the surface where other items are warmed.