This book has investigated trilogues as the democratic secret of European legislation. To this end, it has proceeded in two steps. The first step has been analytical in nature, in that it has described and reconstructed the law and practice of European legislation through a close engagement with the relevant normative sources (Chapters 1–3). The second step has been partly doctrinal and partly theoretical (Chapters 4–6). It has been doctrinal, to the extent that it has sought to capture and give distinctive meaning to “informality,” as both a key concept of EU law and an essential feature of trilogues. It has been theoretical, to the extent that it has discussed, appraised, and legitimized trilogues in the light of theories of public authority and democracy beyond the nation state. In this second step, the line of reasoning has also benefitted from a comparative chapter, which has thrown into sharper relief the advantages of a legislative process based on trilogues.