In the course of an ethnographic investigation in the youth group of a Jewish community that included participant observation, group discussions and problem-centred interviews, I gained insights into the contextualised construction of Jewish identities. Analysing identity formation as a holistic form of learning, I identify two trajectories of socially embedded identity formation: appropriating aspects of Judaism taught in the youth group and becoming a part of the Jewish collective. Within the latter trajectory, I differentiate three sub-processes: forming and evaluating social representations of the Jewish people, ascribing ‘Jewishness’ to oneself, and experiencing communality.