Allergen Program

Allergen program

Food safety is a top priority.

At King Arthur, food safety is a top priority. Along with our production partners, we always meet or exceed best-in-class food safety practices when preparing King Arthur Baking Company brand foods, employing methods designed to prevent unintended contact between major allergens and our ingredients, flours, blends, and baking mixes.

The U.S. top 8 allergens

  • Wheat
  • Soy
  • Milk
  • Peanuts
  • Tree nuts (including coconut)
  • Shellfish
  • Fish
  • Eggs

To prevent cross-contact at our manufacturing facilities we utilize:

  1. Consistent production equipment cleanouts that occur between runs of products which contain allergens and those which don’t
  2. Shared equipment testing to ensure no (or a negligible amount of) organic material remains on it after every cleanout
  3. Allergen testing performed at least quarterly to ensure continual success of equipment cleanout procedures

If any test fails to meet requirements, the equipment undergoes another cleanout and the process repeats until results meet cleanliness specifications.

Because of measures taken, our team is confident that unintended cross-contact doesn’t occur during production or packaging.*

Even so, transparency is a key principle in our Food Philosophy, and we’ve designed this page to clearly provide allergen information.

Certified Gluten-Free
Our certified gluten-free products maintain the “Certified Gluten Free” badge on front of packaging. These products are certified by the Gluten Free Certification Organization (a program of the Gluten Intolerance Group), which currently offers the most stringent threshold for testing certification available to us. To meet GFCO’s requirements, products must be tested as gluten-free to less than 10ppm. By using GFCO certification, we exceed the FDA’s standard for gluten-free, which is set to less than 20ppm.

Signature Wheat Flours
  • Our Signature Flours are All-Purpose Flour, Bread Flour, Self-Rising Flour, Whole Wheat Flour, White Whole Wheat Flour, Sprouted Wheat Flour, and their organic versions.
  • Apart from wheat, no U.S. top 8 allergens are added to our Signature Flours. Our Signature Flours packaged in paper bags are produced in a facility where wheat is the only allergen in production. All our flours are Non-GMO, are never bleached or bromated, don’t have vitamin and mineral enrichments added to them, and have no artificial preservatives added.
  • Resealable Packaged Signature Wheat Flours: Unlike other sizes of our Signature Flours, those with resealable flour pouches are produced on equipment that also processes eggs, milk, soy, almonds, and coconut.
    All-Purpose Flour, 3 lbs. 0-71012-01061
    All-Purpose Flour, 8 lbs. 0-71012-01062
    Bread Flour, 8 lbs. 0-71012-01063
    Keto Wheat Flour Blend, 1 lb. 0-71012-06008
  • Cake Flour: Our Cake Flour is produced on equipment that also processes eggs, milk, soy, almonds, hazelnuts, pecans, walnuts, and coconut.
    Cake Flour 0-71012-00004
Certified Gluten-Free
  • Our certified gluten-free products maintain the "Certified Gluten-Free" badge on the front of packaging. These products are certified by the Gluten-Free Certification Organization (a program of the Gluten Intolerance Group), which currently offers the most stringent threshold for testing certification available to us. To meet GFCO’s requirements, products must be tested as gluten-free to less than 10ppm. By using GFCO certification, we exceed the FDA’s standard for gluten-free, which is set to less than 20ppm.
  • To display the Certified Gluten-Free badge on our packaging, our manufacturing facilities go through the following quality controls to ensure our products meet the Gluten-Free standard:
    • Clean-Out Testing – This test validates that the production lines are adequately cleaned after each production run to remove any trace gluten material. While clean-outs remove other allergens as well, we specifically test for gluten.
      • Sampled every clean out by using GFCO approved sampling kit OR
      • Every 6 months if certifying clean out process (this requires consecutive tests with no gluten results after first five product changeovers)
    • Surveillance Audit – Once per year, our production facilities must undergo a surveillance audit to prove they’re following correct operating procedures for all clean-outs, production runs, and testing.
    • Ingredient Testing – Raw ingredients which have greater likelihood for cross-contact in the supply chain are additionally tested based on their risk level. Raw ingredients which pose the highest risk, such as oats, are tested every shipment prior to being run through production lines.
    • Finished Product Testing – Finished products are tested for gluten at a rate determined by their ingredients and past testing results of the production facility. This can result in testing as frequent as 3x per production run to once per quarter, with the latter resulting from consecutive negative gluten testing results.
    • Proficiency Testing – The labs which perform our gluten testing must periodically undergo proficiency testing with the use of independent samples to guarantee the accuracy of their work.
  • Most certified gluten-free products don’t contain any allergen ingredients. An example of limited exceptions include our Gluten-Free Single Serve mixes, some of which contain either soy or milk.
  • Many certified gluten-free products share production equipment with some allergens, including eggs, milk, soy, coconut, and wheat. Almond Flour, Coconut Flour, and Paleo Flour are produced separately.
  • Certified Gluten-Free Flours
    Produced on equipment that also processes eggs, milk, soy, coconut, and wheat.
    Measure For Measure 1 lb. 0-71012-07522
    Measure For Measure 3 lb. 0-71012-07523
    Measure For Measure 5 lb. 0-71012-07526
    Gluten Free All-Purpose Flour 24 oz. 0-71012-07502
  • Certified Gluten-Free Flours – Grain Free
    Produced on equipment that also processes coconut, almonds, pecans, and wheat.
    Coconut Flour 0-71012-10702 Contains: Coconut
    Paleo Baking Flour 0-71012-06003 Contains: Almonds, Coconut
    Almond Flour 0-71012-10701 Contains: Almonds
  • Certified Gluten-Free Mixes
    Produced on equipment that also processes eggs, milk, soy, coconut, and wheat.
    AP Baking Mix 24 oz. 0-71012-07511
    Banana Bread Mix 16 oz. 0-71012-10546
    Bread Mix 18.25 oz. 0-71012-07500
    Brownie Mix 17 oz. 0-71012-07508
    Brownie Mix 2-pack 0-71012-07530
    Chocolate Cake Mix 22 oz. 0-71012-07505
    Cookie Mix 16 oz. 0-71012-07504
    Cornbread Mix 14 oz. 0-71012-07524
    Doughnut Mix 15 oz. 0-71012-40390
    Gingerbread Mix 13 oz. 0-71012-10455
    Muffin Mix 16 oz. 0-71012-07509
    Pancake Mix 15 oz. 0-71012-07503
    Pie Crust Mix 14 oz. 0-71012-07525
    Pumpkin Bread Mix 12 oz. 0-71012-10549
    Scone Mix 12 oz. 0-71012-10081
    Sugar Cookie Mix 12 oz. 0-71012-10324
    Yellow Cake Mix 22 oz. 0-71012-07510
  • Certified Gluten-Free Single Serve Dessert Cups
    Produced on equipment that also processes eggs, soy, cashew, hazelnut, coconut, almonds, and walnut. These products also contain allergens as noted.
    Brownie Mix 2 oz. 0-71012-07528 Contains: Soy
    Choc Chip Cookie Mix 2 oz. 0-71012-07529 Contains: Soy
    Confetti Cake Mix 2.25 oz. 0-71012-07532 Contains: Milk
    Choc Cake with Salted Caramel 2.25 oz. 0-71012-07531 Contains: Milk
Other Specialty King Arthur Brand Ingredients (not noted above)

For items exclusively sold through our catalog (KingArthurBaking.com) and at our flagship store in Norwich, VT, please refer to individual packaging for allergen information. We make digital versions of these packages available online via products’ individual web pages via the “Nutrition & ingredients” link found just below the red “Add to Cart” button. Additionally, any allergens that are used in production of the product will always be labeled with a “Contains:” statement on package.

Items from other brands sold through KingArthurBaking.com

Please refer to the manufacturer for items not produced by King Arthur Baking Company for the most accurate information.

Our cross-contact prevention measures focus on the U.S. top 8 allergens, but we understand that some customers may wish to avoid other unmentioned ingredients. While we’re currently unable to answer broad questions regarding other ingredients (e.g., ‘Do any of your products share equipment with mustard?’) or identify other ingredients which could share production equipment with our certified gluten-free products, we do our best to answer ingredient questions about individual products when asked. Please feel encouraged to Contact Us with questions.

*Because we don’t currently test the products themselves for the presence of allergens (excepting gluten in our certified gluten-free line), we’re simply unable to offer a 100% guarantee against the possibility of contact outside of production. The safety of our customers is a top priority for our team, and we always recommend speaking to a doctor or dietician whenever a customer has concerns about a product being right for them.