Unusual. Ouzo is traditionally mixed with water. But the soda was amazing, it made the drink longer but more ouzo-y, it really brought out the aniseed flavour and didn’t drown the drink at all.
I believe that once Greek country folk used to make Ouzo at home and as well as aniseed would add Wormwood, the plant Artemisia, named for the goddess Artemis. From her name came also Absinthe, a famous green coloured drink, very popular into the early 20th century, but then illegalised in France and subsequently elsewhere, on the premise that it was mad, bad, and dangerous to drink, addictive and psychoactive, because of the wormwood. However absinthe had a lot of adherents in the creative world, see
https://en.wikipedia.org/wiki/AbsintheFollowing more recent recent research Absinthe is legal again. I bought some but I wasn’t sure it was my favourite. I’m good with Ouzo and Soda.
Στην υγειά σας!
PS the name Wormwood is from the same origin as Vermouth.