They also wanted these wines to be from smaller more sustainable producers who emphasise minimal intervention in the winemaking process.
As Davis explains it, "we know the huge effort some winemakers go to produce sustainable wine. But then it ends up in single-use bottles that create carbon dioxide emissions when manufactured, labelled, transported and disposed of."
"We save the winemakers transport costs by collecting the wine.We transfer it into sustainable KeyKegs, which are recyclable, lightweight kegs that dispense liquid with air pressure instead of gas. The reduced weight dramatically reduces the carbon footprint normally associated with transporting goods."
All this cutting of emissions also leads to cutting costs for customers. Glou sells some incredible wines at 30 per cent less than regular retail prices. But as well as sustainability, the couple wanted a different concept for their wine store - a Berlin-inspired venue (Rahel is from Germany) where the boundaries are blurred between retail store and tasting room.
You sense this as soon as you approach the sparkling new store, which is smack in the middle of Smith Street's famous strip of enticing restaurant and bar options. Entering Glou, feels like ducking off the street for a relaxing drink in a bar.
Glou is an attractive cutting-edge space designed by cult Berlin artist, Matthias George Koerner, and Timmy Bourke of Timmy Bourke Designs. Velvet chairs and modern seating juxtaposed against bare floors. It is a long, deep space but one divided into welcoming smaller areas for groups of different sizes.
Watching the customers come and go was interesting. Quite a few couples wandering in for a drink. Some people came on their own to get their refills and try a new wine for the week but ended up chatting to Ron and Rahel, who are congenial hosts.