GLUTEN FREE CONFIDENCE SCORE: 7/10

It seems as though regular, unflavored Starbucks coffee should be gluten-free, but there is actually some debate about this (see this excellent article from Gluten Free Gigi). Coffee itself is naturally gluten-free but there is the chance for gluten cross-contamination during the production process. We do not have any solid evidence that regular, unflavored packaged Starbucks coffees contain gluten, but based on Gluten Free Gigi’s article is seems as though there are still some unanswered questions.