In the English for Academic Purposes (EAP) classroom, speaking is a relatively marginalised learning activity, often employed merely to facilitate transition between activities which prioritise communication skills deemed more important. A significant consequence of this privation is limited practice in situated discourse. This paper presents a theorised account of an instance of situated discourse: Quality Talk in a reading circle within an EAP classroom. With reference to a single dialogic spell unfolding around a specific issue, I examine participants' verbal transactions and the ways in which these enhance high-level comprehension of text. Overall, this account seeks to highlight the efficacy and affordances of situated discourse as a social mode of cognition in EAP instruction.