Does stock cubes contain gluten?
Often yes. The same cubes often contain wheat too, used as a thickener or a carrier. Certified gluten-free stock cubes exist, and a kitchen that pays attention keeps them in the cupboard on purpose.
Eating out
"Which stock do you use?" is the question that immediately tells apart a kitchen used to intolerances from one that has never thought about it.
Recipes change from one producer to the next and from one kitchen to the next: this is how something is usually made, not what is in the plate in front of you. The only answer that holds for your plate is the ingredient list on the packet, or the person who cooked it.
The same question, about the other one
And how did it go at the restaurant?
Knowing what is in a dish is half the answer. The other half is what actually happened to the people who ate it in a specific place — and that is what SafeBelly collects: no stars, just how it went afterwards.
Open the map and see who has been there