Do fries at mcdonalds have dairy?

Quick Answer

McDonald’s french fries do not contain any dairy ingredients. They are cooked in vegetable oil and the ingredients include potatoes, vegetable oil (canola oil, corn oil, soybean oil, hydrogenated soybean oil), and dextrose (a natural sugar made from corn). However, there is a small chance of cross-contact with dairy products during preparation and cooking in the restaurant.

Ingredients in McDonald’s French Fries

McDonald’s states that their fries contain just three ingredients:

  • Potatoes
  • Vegetable oil (canola oil, corn oil, soybean oil, hydrogenated soybean oil)
  • Dextrose (natural sugar from corn)

So there are no dairy ingredients like milk, cheese, yogurt or butter in their fries. The fries are cooked in vegetable oil.

However, the fries may come into cross-contact with small amounts of milk and dairy products during preparation and cooking in McDonald’s kitchens. So while the fries themselves are dairy-free, trace amounts of dairy from the environment may inadvertently get into the fries.

Are McDonald’s Fries Dairy-Free?

While the fries themselves do not contain dairy ingredients, McDonald’s does not claim that their fries are 100% dairy-free or safe for people with dairy allergies. This is because of the potential for cross-contact with dairy products in the restaurant kitchen.

Some of the ways in which cross-contact could occur include:

  • Fries may be cooked in oil that was previously used to cook dairy-containing products like hash browns or cheese sticks.
  • Fries may come into contact with dairy-based sauces and condiments.
  • Equipment and utensils used for fries may be cleaned alongside dairy-containing dishes.
  • Fry packets may be filled alongside dairy-containing sandwich and wrap fillings.

So while the fries are made without any dairy ingredients, McDonald’s does not guarantee they are 100% dairy-free for people with milk allergies or lactose intolerance. Anyone with a severe dairy allergy should exercise caution when eating McDonald’s fries.

Ingredients Can Vary By Country

It’s important to note that ingredients may vary slightly by country. For example, McDonald’s fries in the UK contain milk as an ingredient due to the addition of dextrose made from wheat.

So if you have food allergies or intolerances, always check with your local McDonald’s for the most up-to-date ingredient information in your country. Don’t assume that ingredients will be the same worldwide.

Other Menu Items With Dairy

While McDonald’s fries are made without dairy ingredients, many other menu items do contain milk, cheese and other dairy products.

Some examples of McDonald’s menu items that contain dairy include:

  • Burgers with cheese slices
  • McFlurries (contain milk and ice cream)
  • Milkshakes
  • Ice cream cones
  • McCafe coffee drinks made with milk
  • Parfaits and fruit smoothies
  • Cookies and pies with milk or butter
  • Breakfast sandwiches with cheese and egg

So if you need to avoid dairy completely, you’ll have to be careful when choosing menu items at McDonald’s. Stick with plain hamburgers, french fries, hash browns, and drinks like soda, juice, coffee and tea.

Cooking Process of McDonald’s Fries

To understand why McDonald’s fries contain no dairy, it’s helpful to look at how they are made:

Step 1: Potato Selection

McDonald’s uses specific potato varieties that are low in sugar, high in starch, and have just the right texture.

Step 2: Peeling and Cutting

Potatoes are peeled, washed and precisely cut into McDonald’s iconic french fry shape.

Step 3: First Blanche

The cut fries are partially fried in vegetable oil at a lower temperature to cook them through while keeping them white inside.

Step 4: Freeze

The partially fried fries are then quickly frozen. This pause in the cooking process locks in flavor.

Step 5: Second Frying

The fries are fried again, this time at a higher temperature, to achieve that signature golden-brown crispiness.

Step 6: Salting

Hot fries come out of the oil and are immediately seasoned with salt.

As you can see, at no point in the frying process are any dairy ingredients like milk or butter added. That’s why McDonald’s fries are dairy-free in terms of their core ingredients.

Nutrition Facts for McDonald’s French Fries

Here are the basic nutrition facts for a medium order of McDonald’s french fries, according to the McDonald’s website:

Nutrition Facts Amount
Calories 340
Total Fat 17 g
Sodium 290 mg
Total Carbs 44 g
Protein 4 g

As you can see, there are 0g of dairy constituents like calcium, vitamin D, cholesterol or lactose. This matches up with the fact that there are no dairy ingredients in McDonald’s fries.

Presence of Milk Allergens

While there is no milk or dairy in the ingredients, McDonald’s fries may contain trace amounts of dairy due to cross-contact in restaurants.

In their allergen information, McDonald’s states:

“We do not promote our food as allergen free or free of any specific allergen. We do list the top eight food allergens in each menu item to help our guests with food allergies to make an informed choice.”

The top 8 food allergens include milk, eggs, fish, shellfish, tree nuts, peanuts, wheat and soybeans.

So even though fries do not contain milk-based ingredients, McDonald’s recognizes they may contain traces of milk due to shared equipment and processes. People with severe dairy or milk allergies are advised to exercise caution.

Gluten Content in McDonald’s Fries

McDonald’s fries contain no gluten-based ingredients. However, they do state on their website:

“While our fries do not contain gluten, they may come into contact with other products during preparation. Customers who are highly sensitive should note that gluten free is not a claim made for any McDonald’s USA menu items.”

So similar to dairy, while McDonald’s fries are gluten-free in their core recipe, cross-contact with buns and other gluten sources in the restaurant is possible.

Are McDonald’s Fries Vegan?

Strict vegans may want to avoid McDonald’s fries. While the ingredients themselves are vegan, containing potatoes, oil and sugar, the potential cross-contact with dairy and meat products can affect vegan status.

The oil used to cook the fries may also be shared with non-vegan ingredients. So full traceability is difficult in a restaurant environment.

However, less strict vegans who still eat foods that are “may contain” dairy or other animal products will likely consider McDonald’s fries to be vegan-friendly. But stricter vegans and those with severe allergies are advised to be cautious.

Ingredients in McDonald’s Fries Internationally

As mentioned previously, ingredients in McDonald’s fries can vary slightly in different countries. Here is how the ingredients compare in a few different markets:

United States

Ingredients: Potatoes, vegetable oil (canola oil, corn oil, soybean oil, hydrogenated soybean oil), dextrose, salt.


Ingredients: Potatoes, canola oil, hydrogenated soybean oil, safflower oil, natural flavour (vegetable source), dextrose, sodium acid pyrophosphate (maintain colour), citric acid (preservative), dimethylpolysiloxane (anti-foaming agent), cooked in vegetable oil (canola oil, corn oil, soybean oil, hydrogenated soybean oil, citric acid, dimethylpolysiloxane).

United Kingdom

Ingredients: Potatoes, vegetable oil (rapeseed oil, palm oil), dextrose, flour (wheat), starch, salt, dextrin, preservatives (disodium diphosphate, sodium pyrophosphate), milk proteins, colour (paprika extract, riboflavin), stabilisers (methyl cellulose, guar gum).

As you can see, the UK version contains milk proteins while the North American versions do not. So always check local ingredients before consuming McDonald’s fries if avoiding dairy.

Potential Changes for Allergy Sufferers

McDonald’s states that customers may request plain fries that are cooked in dedicated fryers separate from other menu items to reduce cross-contact with potential allergens like dairy and gluten.

However, they do not guarantee allergen-free preparation, so this should be considered higher risk for those with severe dairy allergies or celiac disease.

Some other tips from McDonald’s include:

  • Request freshly made fries to reduce cross-contact
  • Visit the restaurant at non-peak times to promote better adherence to allergy protocols
  • Communicate any food allergy to staff each time upon ordering

Being upfront about dietary restrictions and allergies can allow McDonald’s staff to take extra care in preparing your order.

Dairy-Free Frying Options at Home

If you want fries without the risk of cross-contact with dairy and gluten, making them at home is an option.

When preparing fries at home, choose high quality oils such as:

  • Avocado oil
  • Coconut oil
  • Grapeseed oil
  • Peanut oil
  • Sunflower oil

Avoid heavily refined vegetable oils like canola, soybean and corn oil which are rich in inflammatory omega-6 fatty acids.

Use a dedicated gluten-free, dairy-free fryer or pot just for fries to prevent cross-contamination. Season your homemade fries with salt and spices to taste.

Bottom Line

In summary, the answer to “do McDonald’s fries have dairy?” is:

  • No, the fries themselves do not contain any dairy-based ingredients like milk, cheese or butter according to McDonald’s nutrition information.
  • However, cross-contact with small amounts of dairy during cooking and preparation in restaurants is possible.
  • McDonald’s does not guarantee 100% dairy-free preparation, so caution is advised for those with severe milk allergies or lactose intolerance.
  • Always check local ingredients as recipes can vary slightly between countries.
  • Making fries at home with dedicated dairy-free oil is the safest option for avoiding cross-contact.

So in conclusion, McDonald’s fries contain no direct dairy ingredients, but may have trace contact with dairy in the restaurant. People managing dairy-free diets should weigh their own level of risk tolerance when choosing to consume them.

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