What Could A Cler Blister On The Inside Of My Mouth Be Artisan Boulanger Pâtissier On Rue Cler In Paris, France?

Artisan Boulanger Pâtissier on Rue Cler in Paris, France? - what could a cler blister on the inside of my mouth be

Does anyone know the name, website, or hope for this bakery with coffee market? Best croissants in the world!