A shrub is a tangy and sweet mixture mixed with water or seltzer, making effectively a mature soda. I like a lower ratio of shrub to soda water, but this ratio has been the most popular at all my summer dinner parties. I rarely add gin to this but am alone in my abstinence.

Shrubs also keep for ages because of their acidity and sweetness. I refrigerate just to be safe even though it probably isn’t necessary