The spelling of the term 'frosted liver' makes use of phonetic transcription to represent its pronunciation. The word 'frosted' is spelt as 'frɒstɪd', indicating a short 'o' sound and an 'st' cluster with a soft 't' sound. Meanwhile, 'liver' is spelt as 'lɪvər', with a short 'i' sound and a reduced 'ə' vowel. Together, this term is pronounced as 'frɒstɪd ˈlɪvər', which refers to a liver dish that is coated with a white, sugary glaze.
Icing liver, etc.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.