This article describes how a methodological memo (MM) was used in a research and development project designed to reform initial teacher education (ITE). A MM was used to explore what often remains an opaque part of the research process--the relationships between theory and practice that underpin many research studies. Yet, without detailed accounts of the research process, it is difficult to understand this relationship. In this case, a memo was used to record the methodological and analytical dilemmas that were encountered in a study of the theoretical and pedagogic processes involved in developing a new ITE course so that primary and secondary teachers are better prepared to respond to increasing diversity in schools. This article addresses how developing and sharing transparency in the research process can help clarify contested concepts associated with a research project and provides the foundation for rich theoretical debate.