Gluten-free alternative to commercial yeast when making gluten-free bread?

This link claims that yeast contains gluten, which is understandable.
Yet today, a lot of people have a reaction to gluten that they are trying to avoid by becoming gluten-free. There are many brands of bread that sell gluten-free bread, made out of gluten-free grain.
When making my own bread, I want to use gluten-free yeast (and ideally, organic). These people sell organic quinoa yeast, which is gluten-free, but do not ship to the USA.
I am wondering what alternative exists that is gluten-free and organic and that one can find here in the USA.
Best Answer
That very same source says:
The following yeasts are all gluten-free:
- active dry
- autolyzed (not autolyzed yeast extract – see below)
- baker’s
- nutritional
That includes just about any type of yeast that you'd use for baking.
"Brewer's yeast" is unique because it's typically harvested from previous batches of beer. Specific yeast strains have an impact on the finished beer's flavor, and brewers will cultivate those in hopes of replicating a certain flavor. This yeast contains gluten because it also contains remnants of the beer itself in addition to the yeast.
Yeast extract, which the source calls out as possibly containing gluten, is something else entirely and is typically used as an additive and flavor enhancer, not as a leavening agent.
Use the same yeast that you'd use for baking anything else. The grain is more important to ensuring that the finished bread is gluten-free; here is an extensive but non-exhaustive list.
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What is a gluten-free substitute for yeast?
Is Instant Yeast Gluten-Free? Yes, instant yeast is gluten-free. Instant yeast is similar to active yeast, but can be directly added to dry ingredients in a recipe, rather than having to be dissolved in water first.Does gluten-free bread need yeast?
Most gluten-free bread is made with yeast, as yeast works quite well with most gluten-free flours. When you're making your own gluten-free bread with yeast, however, it's important to note that not all baker's yeasts are gluten-free.Which yeast is best for gluten-free bread?
Active dry yeast and instant yeast both work well and are often interchangeable. Be on the lookout for any Rapid Rise yeast that is best for one rise. For most of us that's the way gluten free bread is baked, a single rise in the tin.Can I use xanthan gum instead of yeast?
For breads, you'll usually have to use around two teaspoons. What exactly xanthan gum does: It holds things together and can act as a substitute for gluten. Gluten causes bread to rise because it traps the yeast bubbles and allows them to grow. Xanthan gum can substitute for gluten by doing the same thing.How to Make the Best Gluten Free Artisan Bread You'll Ever Have!
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Answer 2
Just buy baker's yeast. Only brewers yeast might contain gluten because its a byproduct of beer.
The quinoa product you mention is simply quinoa flour with yeast added.
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
Images: Karolina Grabowska, Mariana Kurnyk, cottonbro, cottonbro