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Keto Bread Costco

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Last Updated on August 3, 2021

I love Costco. I love Keto. In this post we dive in to the ingredients used for Costco’s Keto bread and determine if it’s actually Keto or if it’s just a marketing gimmick.

Ingredients in the Keto Bread at Costco

The bread in question is the Artisan Bakers Keto Bread available at Costco. Here are the ingredients in the Artisan Bakers bread:

  • Tapioca Starch
  • Water
  • Wheat gluten
  • Inulin (chicory root fiber)
  • Oat fiber
  • Wheat protein isolate
  • Sunflower seeds
  • Flax seed meal
  • Yeast
  • Soy oil
  • Cultured wheat flour
  • Vinegar
  • Salt
  • Preservatives (calcium propionate, sorbic acid)
  • Guar gum
  • Ascorbic acid
  • Enzymes

Problematic Keto Ingredients (in Keto Bread at Costco)

Let’s review ingredients that should be avoided (for all) and ingredients that should be avoided by those on a Keto Diet.

Tapioca Starch (raises blood sugar)

I love Cassava flour, it’s a great alternative for wheat flour, and is perfect in Paleo recipes. However, while I love it and think it’s a clean alternative to grains, there’s a darker side: it raises blood sugar levels. Tapioca Starch is derived from Cassava.

How is Tapioca Starch Made?

Tapioca starch is usually made from the cassava root. The roots are peeled, washed, and grated to create a pulp. This process is repeated until the desired purity is reached. The pulp is then mixed with water and heated to allow the starch in the roots to break down into smaller pieces of starch granules. These granules are then strained and rinsed with water until all of the liquid has been removed from them. The final step is to dry them so they will not be sticky and gooey when they are cooked with other ingredients in food products such as puddings or breads.

High Glycemic Response from Tapioca Starch

The number one ingredient listed on this bread is known to raise blood sugar. While i think Cassava flour is a great alternative for most, it’s a terrible option if you’re trying to manage blood sugar levels.

Costco Bread (Artisan Bakers) Raises Blood Sugar

Here’s a good spot to insert a visual of how this bread spiked my blood sugar. Remember: when on a Ketogenic Diet, it’s important to eat foods that do not raise blood sugar levels. This product cannot be considered Keto, it raises blood sugar and IMO it’s mostly because of the very first ingredient: tapioca starch.

Costco Keto Bread

To read more on CGM use and testing, here are two useful blog posts:

Inulin (chicory root fiber)

Inulin is a soluble fiber that can be used as an alternative to fiber supplements and modified food starches.

One of the benefits of inulin is that it is more readily digested than other fibers, and it does not have the same effect as insoluble fiber on increasing fecal bulk. The FDA has approved inulin for use in a variety of food applications, such as frozen desserts and cereal bars.

Inulin (should be safe but I’m not completely convinced)

Inulin is a natural carbohydrate which humans can digest, but the bacteria in the gut cannot break it down. It will release its energy slowly into the system and in theory should keep your blood sugar level under control.

Inulin is not broken down by bacteria in the gut, so it has a low GI rating of 2-5 and may not raise blood sugar.

However, I’m not sure that labeling always tells the full story on what fibers are actually being used. With this ingredient, I’d give it pass if the bread didn’t raise my blood sugar. I’m not in belief that this was the reason for the spike but I have to remain someone skeptical as fibers are not as reliable as alternative sweeteners like Allulose and Stevia in relation to blood sugar control.

Problematic Ingredients (not Keto specific)

There’s a problem with these ingredients BUT alone, they do not raise blood sugar. BUT that doesn’t mean you should consume them…

Wheat Gluten, Wheat Protein Isolate, Cultured Wheat Flour

Gluten is a protein and for most, it will not raise blood sugar. However…

I think it’s funny that people now wear “I eat gluten” as a badge of honor. Congrats, you’re so silly, clever, and handsome. But… you’re wrong.

Gluten sensitivity isn’t just for those that have been diagnosed with celiac. Modern day gluten (the protein) isn’t going to outright kill you. But… it’s probably making you weaker, especially if you consume it daily.

I don’t want this post to be all about gluten, so rather than write up my reasoning behind avoiding gluten, here are some links that may help:

In other words, just avoid gluten. It’s not doing you any favors and it probably is causing harm.

Soy Oil

What is Soy Oil?

It’s made when: the soybeans are cracked and then heated to between 140–190 °F. After, they’re rolled into flakes and then solvent-extracted with hexanes. The oil is then refined, blended and usually hydrogenated.

Soybeans used in commercial foods are almost ALWAYS genetically modified making them glyphosate-resistant. This mans that the crop is perfectly glyphosate resistant. Farmers can kill weeds by spraying glyphosate, without killing their soybean crop, and they do. And you consume it… a probable carcinogen. Not only that but:

Why is Soy Oil Bad?

New research shows soybean oil may lead to obesity and diabetes. Soy Oil may also affect neurological conditions including: autism, Alzheimer’s disease, anxiety, and depression. Read the publication.

Soybean Oil is an ultra cheap ingredient and if you consume products with it, know this: you are buying “food” that is being made IN THE CHEAPEST WAY possible.

There’s no other reason the company is using soy oil in their product other than: cost. Which should make you question everything, including: the product you’re consuming & the company behind it.

In conclusion:

Keto Bread from Costco

The Artisan Bakers Keto Bread available at Costco is not a Keto Friendly product. Not only is not Keto friendly, there are ingredients that all consumers should avoid.

Best Keto Bread Option

Make Keto bread at home: Keto Bread Recipe

Keto Artisan Bread from cardnl
Better yet… make Keto bread at home!

Disagree? Have experience? Let me know in the comments below.

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Monday 20th of September 2021

I don't consider "keto" to anything about blood sugar in my internal metabolism. I only want to know if it ADDS any net carbs. The lower the net carbs, the higher the keto character of the food. Period. Sorry.


Monday 6th of September 2021

I also bought this bread and was immediately knocked out of ketosis. Was pretty disappointing.


Monday 20th of September 2021

@Kirk, but then you go right back to low blood sugar, because no net carbs are ADDED. It's just a transient effect.