A kind of boiled sweet with a sharp taste.Barley sugar and acid drops are examples of this type of sweet....
The inviting assortment of goodies include acid drops, sherbet lemons, sherbet pips, coconut mushrooms, cinder toffee, Yorkshire mixtures, liquorice sticks, and lollies of all flavours under the sun.
Apparently the shop in Dulwich sells ‘sherbet lemons, sherbet pips, acid drops, and sweet tobacco’.