Soba noodles are often not gluten free, so check the label before you buy. Buckwheat flour is the base of soba, but many soba noodles are made with only a percentage of buckwheat blended with wheat flour, and only a clearly labeled gluten-free product is worth trusting.

Rice noodles are made from rice, which is not a gluten grain, so plain rice noodles are typically gluten free, but the finished product depends on the brand and what else is in the packet. Check the ingredient list for added wheat, and look for a gluten-free claim, especially if you have celiac dise

Plain popcorn is made from corn, which does not contain gluten, but flavored, packaged and movie-theater popcorn can pick up gluten from seasonings, coatings or shared equipment. Check the label every time, and treat anything you can’t verify with care.

Plain potato chips start with potatoes, oil and salt, which don’t contain gluten, but flavored chips and some brands can. Seasonings may include malt vinegar or wheat starch, so the label matters more than the potato.

French fries start out gluten free, since they’re just potatoes, but they’re not always safe to eat. Batter or coatings made with wheat flour, seasoning blends, and shared fryers can all bring gluten in, so you need to check the label or ask before you order.

No, regular flour tortillas are not gluten free. They are made with wheat flour, which contains gluten, so they are off the menu if you have celiac disease, non-celiac gluten sensitivity or a wheat allergy.

Corn tortillas are often gluten free by nature, but not always, so check the label every time. Corn itself contains no gluten, but some tortillas are blended with wheat flour or made where gluten is handled, and that is the part you need to look for.

Yes, cassava flour is naturally gluten free. It is made from the cassava root, not from wheat, barley or rye, and it is listed among the flours that are safe for people with celiac disease. The one real risk is cross-contact during growing, milling or packaging, so check the label.

Coconut flour is made from coconut, which is not a gluten grain, so it is naturally gluten free as an ingredient. The catch is that the bag in your hand may not be: flours are a high-risk product for cross-contact, so look for a gluten-free label before you buy.

Almond flour is made from ground almonds, which don’t contain gluten, but whether a particular bag is safe for you depends on the brand and how it was handled. Look for a clear gluten-free label, and ideally a third-party certification, before you buy.