I have just updated the recommended liquors to include my own recipe for making peach bitters.
P.S. There is something labeled ‘peach bitters’ that you can buy from a company whose motto is, “Don’t squeeze, use Fee’s” in an effort to sell their sour mix. Well, at least their sour mix is sour. Their ‘bitters’ are for fools. They don’t make bitters — they make mostly-bitterless, glycerin-based liquids that will not do the traditional work of the bitters in a true cocktail to mitigate the fumatic harshness of ethanol. The best thing you can call their so-called ‘bitters’ is flavor drops. Don’t be caught dead with them.