You've heard of pop-up restaurants. Now there's the pop-up minyan.
Around 40 people attended an experimental Shabbat morning service in Belsize Park run by Rabbi Naftali and Dina Brawer.
Rabbi Brawer explained that the north-west London gathering grew out of conversations "with a lot of people who said they find davening and, in particular, the Shabbat morning service unfulfilling".
He wanted to "go back to the drawing board and construct a tefillah [prayer service] that was content-rich and spiritually moving".
The service incorporated mindfulness meditation and both traditional and neo-Chasidic melodies. It also had a thematic focus, exploring a topic running through different prayers.
"We did gratitude," he said, "but there are so many themes that can be developed, such as love or trust".
Belsize Park was the second minyan - the first took place in the Brawers' Borehamwood home. Others are planned for Borehamwood and Golders Green.
Currently chief executive of the Spiritual Capital Foundation, Rabbi Brawer is a former minister of the Borehamwood and Elstree Synagogue.
Mrs Brawer, UK ambassador of the Jewish Orthodox Feminist Alliance, is studying for ordination at Yeshivat Maharat, the women's seminary in New York.
"We're being creative and trying to find an alternative way of developing services," Rabbi Brawer said.
"We're experimenting with a new model. We're feeling our way."
For details of forthcoming minyans, see The Experimental Minyan page on Facebook.