YES. The claim appears in some online accounts and older quotes of Red Terror atrocities.
Historical records (Orthodox sources, Melgunov) show Archbishop Tikhon of Voronezh was hanged on the cathedral royal doors in late 1919/early 1920. Seven nuns in the same monastery were thrown into boiling tar. Other Voronezh Cheka tortures (nail barrels, etc.) are documented, but not this exact soup incident.