The silent order

Abstract This study investigates non-verbal hand gestures used in street drive-thru coffee shops ( gahwet taka:si ) in Amman, Jordan, focusing on their role as stand-alone emblems for quick transactions. Integrating Symbolic Interactionism with theories of conventionalization and embodiment, the paper examines how meaning is negotiated between customers and employees through joint action. The methodology consisted of qualitative identification of the gestural lexicon through interviews and observation of 19 coffee shop employees, followed by quantitative validation with 71 participants. Qualitative analysis reveals pathways of conventionalization, including iconicity, pantomime, and shared cultural knowledge, which codify these movements into a system. Quantitative results indicate a high level of recognition among frequent visitors, suggesting that exposure and interaction frequency drive the acquisition of this gestural competence. This study demonstrates how gestures become codified within a commercial context, offering a real-world application of Symbolic Interactionism in understanding the development of an informal, culturally embedded transactional gesture system.