16
Jan
2026
06
Oct
2025
Kirkland Signature Roasted Turkey Breast and Yeast Extract
Product warning for Kirkland Signature Roasted Turkey Breast. This product is labeled gluten-free and it contains yeast extract. Based on email correspondence with Costco, the yeast extract in this product may be brewer’s yeast sourced from the beer brewing process. (Brewer’s yeast from the beer brewing process is known as spent brewer’s yeast-- what’s left of yeast once it has been used to make beer. Consequently, spent brewer’s yeast may include gluten from malt and grain.) Correspondence from Costco: “Our supplier uses PHR-YL...
22
Aug
2025
Yeast Extract: Can it be “hidden” under natural flavor?
Short answer: Based on the response Gluten Free Watchdog received from the Food and Drug Administration, yeast extract can't be hidden under natural flavor--yeast extract must be declared. More details: Gluten Free Watchdog reached out to the FDA to ask if the ingredient “yeast extract” has to be declared in the ingredients list as “yeast extract” or if it can be listed as “natural flavor.” The FDA responded by citing two CFRs: Under the FDA’s Code of Federal Regulations, “The...
11
Nov
2024
Product warning for Progresso Manhattan Clam Chowder from Gluten Free Watchdog
Bottom line: This soup is labeled gluten-free and lists yeast extract in the ingredients. Per the manufacturer, the yeast extract is derived from barley. Gluten Free Watchdog has long recommended that individuals with celiac disease avoid products NOT labeled gluten-free containing the ingredient “yeast extract” unless the manufacturer confirms the source to be gluten-free. It is concerning that a labeled gluten-free product contains yeast extract derived from barley. We have filed a complaint with the FDA. Under the FDA’s rule for the...
30
Jan
2024
Yeast extract confusion redux
In 2019, we wrote about a consumer complaint we received for a labeled gluten-free soup. The product includes the ingredient “flavors (including yeast extract).” Long story short, the consumer who contacted us was told by customer service representatives that brewer’s yeast is the source of the yeast extract. However, she did not receive a definitive answer regarding whether the brewer’s yeast is spent brewer’s yeast. Fast forward to 2024. Gluten Free Watchdog received a consumer inquiry about the autolyzed yeast extract...
21
Jan
2024
Gluten Testing of Food Containing Barley Amylase: Poster Presented at AOMSC 2023
To download the poster presented at the Asia-Oceania Mass Spectrometry Conference, please see: https://www.glutenfreewatchdog.org/news/wp-content/uploads/2024/01/PosterAOMSC20230703_AO-MSC_MN_Poster.pdf AOMSC 2023 Poster Abstract Investigation of foods containing beta-amylase for gluten content Mitchell G. Nye-Wood (a), Tricia Thompson (b), Margaret Clegg (b), Michelle L. Colgrave (*a) School of Science, and Australian Research Council Centre of Excellence for Innovations in Peptide and Protein Science, Edith Cowan University, Perth, WA, Australia (a) Gluten Free Watchdog, LLC, Manchester, MA (b) Gluten proteins are unique food allergens that are a common dietary component for many...
06
Jul
2023
Gluten-Free Claim Removed from KA-ME Hong Kong Express Rice Noodles
In May 2022, Gluten Free Watchdog (GFWD) reported KA-ME Hong Kong Express Rice Noodles to the Food and Drug Administration (FDA) via the Center for Food Safety and Applied Nutrition (CFSAN) Adverse Event Reporting System (CAERS). At the time, product packaging included a gluten-free claim yet barley amylase was declared in the ingredients list. In February 2023, GFWD submitted a Freedom of Information Act (FOIA) request with FDA to find out what action was taken on our complaint. One of the...
24
Apr
2023
Gluten Free Watchdog Special Report on Barley Amylase: Is this enzyme safe to include in a gluten-free diet?
To help find out, products containing barley amylase were tested for gluten using high sensitivity liquid chromatography- multiple reaction monitoring-mass spectrometry. The full report is available HERE.
17
Feb
2021
Dandy Blend Instant Herbal Beverage: Where is the enforcement FDA?
This herbal beverage is labeled gluten-free and lists as ingredients “extracts of roasted barley, rye”. After seven years of reporting this product to FDA, it remains on store shelves. What follows are the nitty-gritty details. Initial correspondence with FDA Gluten Free Watchdog first made FDA aware of this product via email on January 10, 2014—over SEVEN years ago!FDA’s initial email response received January 17, 2014:“As far as the product, “Dandy Blend Instant Herbal Beverage”, we do not have enough information to be able to...
23
Jun
2020