The tarp is gone, the La Marzocco is whirring and customers are rolling in at Gilles Street’s newest resident, Sibling.

The slick new coffee shop from Caitlin Duff and husband Nathaniel Morse has sidled in next to literal sister space Ensemble, the retail shop run by Caitlin’s sister, Anny. When the site (a former gym) became available late last year, it was a no-brainer to take over the lease. “We couldn’t pass up the space,” Caitlin tells Broadsheet. “It was a matter of timing and fortune, really.”

The family ties don’t end there. A co-working space out the back houses the studio of another sister, photographer Sia. “And mum does the sewing for Anny’s bedding range, so she’s in there too,” adds Caitlin, with a laugh.

She and Morse recently moved back to Adelaide after a stint in Melbourne, where they spent eight years playing in bands and working in cafes. After falling pregnant, they packed up and moved home to be close to family.

Thankfully they’re a tight-knit bunch. “I feel great about it,” says Caitlin. “We’re one of those families that are friends too. We bounce ideas off each other, we value each other’s insights and we inspire each other. I wouldn’t have it any other way. That’s one of the reasons we landed on the name Sibling. It’s a celebration of that. I’m so excited to be home and back in close quarters with everyone.”

The primary motivation for taking over the space was to relocate their recording studio Elysian Fields, which they’d been running in Melbourne. The pair composes music for film, TV and advertising, as well as their own band, Manor. Morse also works as a producer for a clutch of Melbourne-based artists.

“Because there was this beautiful shop-front area as well we thought it would be great to have a place where we can do both of our passions, which is making coffee and lovely food and at the end of the day we can pop back there and have a band practice and record some music,” says Caitlin.

The Sibling kitchen turns out a simple menu of bagels, toasties and seasonal soups, all available to eat in or take away. There are pastries from Market Street and cakes by mum, Kate. “It’s just about keeping things fresh and keeping with what’s available at the markets,” says Caitlin. “We’ll be going in early and coming up with a lunch special based on what we find.”

Caitlin and Morse have enlisted some of Adelaide’s top producers for supplies: bread from Market Street, bagels from The Beigelry, cheese from Say Cheese and coffee from Monday’s.

The fit-out, by designers Reuben French-Kennedy and Sling/Hook is suitably minimal; it’s light and bright with textured and white walls, white chairs and timber tabletops and countertops. “The vibe is very similar to Ensemble, aesthetically,” says Caitlin. Coffee is served in cups by Aoon Pottery, which Anny picked up in Thailand. Emma Sadie Thomson, who also runs Ensemble, has crafted planter boxes with herbs to be used for cooking. The aprons are made from leftover linen from Anny’s label, Good Studios.

“It’s a rustic, disheveled, everything-was-made-by-us vibe,” says Caitlin. “Primarily it’s been us finding things online and going: ‘Oh, that might fit’ and then making them fit.”

96 Gilles Street, Adelaide
Mon to Fri 7.30am–4pm

This article was updated on August 8, 2018.