Gluten-free ingredient and label checks
Browse common “is this gluten free?” questions, then scan the actual ingredients list in GlutenScan when the product label matters.
Sauces and condiments
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Is soy sauce gluten free?
Regular soy sauce often contains wheat and should not be assumed gluten-free. Some tamari and specially labeled soy sauces may be gluten-free, but you need the ingredient list and allergen statement to know how to treat the actual product.
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Is Worcestershire sauce gluten free?
Worcestershire sauce is label-dependent. Some brands are labeled gluten-free, while others may use malt vinegar, soy sauce, or flavorings that need closer review.
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Is teriyaki sauce gluten free?
Teriyaki sauce should be treated as unknown until you read the label. Many versions contain soy sauce with wheat, while some are made with gluten-free tamari or are specifically labeled gluten-free.
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Is hoisin sauce gluten free?
Do not assume hoisin sauce is gluten-free. Some versions contain wheat or soy sauce, while others may be labeled gluten-free. The ingredients list is the deciding factor.
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Is miso gluten free?
Miso is label-dependent. Some miso is made with rice or soybeans and may be gluten-free, while barley miso and wheat-containing miso should be treated as unsafe for gluten avoidance.
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Is oyster sauce gluten free?
Oyster sauce is unknown until you read the label. Some products contain wheat or soy sauce, while others may be gluten-free or use gluten-free thickeners.
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Is fish sauce gluten free?
Plain fish sauce is often gluten-free, but you should still check the label. Added wheat, soy sauce, flavorings, or advisory statements can change the result for a specific product.
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Is tamari gluten free?
Many tamari products are gluten-free, but not all. Check the exact bottle for wheat, barley, soy sauce blends, and a clear gluten-free claim.
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Is vinegar gluten free?
Many vinegars are gluten-free, especially distilled vinegar, apple cider vinegar, wine vinegar, and rice vinegar. Malt vinegar is the major gluten concern, so generic vinegar wording can be unknown until the label is clear.
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Is distilled vinegar gluten free?
Distilled vinegar is generally considered gluten-free. The product can still be unsafe if the full label contains malt vinegar, barley, wheat, rye, soy sauce, or gluten advisory wording.
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Is malt vinegar gluten free?
Malt vinegar should be treated as unsafe for gluten avoidance because it is usually made from barley malt, a gluten-containing grain.
Ingredients
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Are oats gluten free?
Oats themselves are naturally gluten-free, but regular oats are a common cross-contact concern. For people avoiding gluten strictly, the safest label pattern is oats that are clearly labeled or certified gluten-free.
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Is yeast extract gluten free?
Yeast extract can be gluten-free, but it needs context. The main concerns are brewer's yeast, barley-derived ingredients, malt flavoring, and gluten or wheat advisory statements on the product.
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Is maltodextrin gluten free?
Maltodextrin is often considered gluten-free, especially when made from corn, potato, rice, or tapioca. But the best answer depends on the country, source, allergen statement, and the rest of the product label.
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Is baking powder gluten free?
Many baking powders are gluten-free, but you should still check the label. The main things to review are the starch source, gluten-free claim, and advisory wording about wheat or shared equipment.
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Is MSG gluten free?
MSG, or monosodium glutamate, is generally gluten-free as a standalone ingredient. The product can still be unsafe if the label contains wheat, barley, rye, malt, soy sauce, or gluten advisory wording elsewhere.
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Is modified food starch gluten free?
Modified food starch is not automatically unsafe, but it is not a complete answer by itself. If the source is wheat or the label declares wheat, treat the product differently than one labeled modified corn starch or gluten-free.
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Is xanthan gum gluten free?
Xanthan gum is generally gluten-free as a standalone ingredient. The bigger question is whether the product contains wheat, barley, rye, malt, or other gluten-related terms elsewhere on the label.
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Is dextrose gluten free?
Dextrose is generally considered gluten-free as a standalone ingredient. Still, you need to check the full product label for wheat, barley, rye, malt, and advisory statements.
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Is wheat starch gluten free?
If a label simply says wheat starch, treat it as unsafe for gluten avoidance unless the product also has clear gluten-free context that you trust. Wheat starch is wheat-derived and should not be treated like corn starch or potato starch.
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Is barley malt gluten free?
Barley malt is not gluten-free. Ingredients such as barley malt, malted barley, malt extract, and malt syrup should be treated as unsafe for gluten avoidance.
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Is caramel color gluten free?
Caramel color is generally considered gluten-free, especially under typical U.S. labeling. The product can still contain gluten from other ingredients, so the full label matters.
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Is glucose syrup gluten free?
Glucose syrup is often considered gluten-free after processing, but it is still worth checking the source, allergen statement, and other ingredients on the product.
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Are spices gluten free?
Plain single-ingredient spices are usually gluten-free, but spice blends and seasoning mixes are unknown until you read the label. Wheat, malt, soy sauce powder, and anti-caking ingredients can appear in blends.
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Is natural flavor gluten free?
Natural flavor is usually not a gluten term by itself, but it can be hard to evaluate without more context. Check for wheat, barley, rye, malt, soy sauce, or allergen statements elsewhere on the label.