I really enjoy different presentations of classical or well-known cocktails while keeping almost all the ingredients the same. This way, you can create a different experience of having that cocktail. You can think of this inverted clover club (mulberry) as a different presentation of the cocktail that I posted last week as a classical recipe of clover club but with mulberries instead of raspberries. Since the berries are removed from the mix, adding dry vermouth will be a good choice.