We don't have synonyms for soured cream yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are sour cream.
(n) :
(British, Australia, Canada) A cream that has been soured and thickened by using Lactobacillus bacteria; used in soups, salads and meat dishes such as beef Stroganoff.
(n) :
(British, Australia, Canada) A cream that has been soured and thickened by using Lactobacillus bacteria; used in soups, salads and meat dishes such as beef Stroganoff.