Between 1989 and 2020 Jonathan Petherbridge worked as the Artistic Director of a community-based theatre company - London Bubble. This longer than average tenure allowed him time to forge a close working relationship with the community and develop new ways to involve people of all ages in theatre-making. Out of a slew of projects emerged a particular methodology to make work that was researched, curated and performed by citizens between the ages of 8 and 80. The process that emerged was called Foraging – a methodology carefully divided into five phases, which attempts to bring the best out of both voluntary and specialist artists – making time and space for them to create theatre that has a striking beauty and an ingrained aesthetic of care. Vernacular Theatre describes the result – the aesthetic. The case studies - based on work with citizens of London and Hiroshima - examine how this theatre has valued key moments of communal history, contemporary issues and everyday institutions. The book suggests reasons and techniques for others to make similar work. Concluding with a reflection on the pre-classical Chorus of Greek Theatre where original work was produced to celebrate events with and for the community, this book proposes a new genre – a social and intergenerational art form that invites people to gather and share their life experience, concerns and creativity.