Some EU supermarkets used to have a circular glass system where products were brought in bulk, and only canned in glass inside the shop, sometimes by the custom

Some EU supermarkets used to have a circular glass system where products were brought in bulk, and only canned in glass inside the shop, sometimes by the customer. Bottles were then returned after use, washed locally and reused many times. This looked fairly efficient. Restaurants and bars still have the same system here for e.g. Coca-Cola drinks, which come inside a glass bottle that has been reused several times. I'm not sure plastic is more efficient than reusing a glass bottle. Lots of yogurts are packaged in glass containers, and price seems average. I have also heard that plastic is rarely recycled, so it also sounds unsustainable from that perspective.