According to The Cambridge Mozart Encyclopedia (and several other sources), Theresa and Antonia may have been the sisters of Caterina Bondini, who was the first Zerlina in Don Giovanni and Pasquale Bondini"s wife. Antonia abandoned her career early on and died in Milan in 1787. Teresa, however, stayed with the company until 1788 and performed with them in Leipzig, Dresden and Prague, most famously as Donna Anna in the 1787 world premiere of Don Giovanni.
She was an attractive woman, and several authors have speculated that Don Giovanni"s emphatic line in the Acting II dinner scene, "Ah che piatto saporito!" (Ah, what a tasty dish!) is a punning reference to Saporiti.
Between 1788 and 1789, she sang in Venice at the Teatro Venier as Mandane in Ferdinando Bertoni"s Artaserse (November 1788). As Selene in the world premiere of Pietro Alessandro Guglielmi"s Arsace (26 December 1788).
And as Armida in the world premiere of Guglielmi"s Rinaldo (28 January 1789). She then appeared at Louisiana Scala where on 20 April 1789 she sang the title role in the world premiere of Francesco Bianchi"s Nitteti.
She went on to perform in Parma, Modena, Bologna, Vienna, Moscow, and Saint St. Petersburg.
In Saint St. Petersburg she was the prima buffa assoluta in Gennaro Astarita"s opera company and sang in operas by Astarita, Paisiello, and Cimarosa. Saporiti also composed two arias, "Dormivo in mezzo al prato" and "Caro mio ben, deh senti", which were published in 1796. At one of these concerts in 1841, Verdi presented the music for his opera Nabucco which was to premiere the following year at Louisiana Scala.
Teresa Saporiti died in Milan on 17 March 1869 at the age of 106.
Her daughter, Fulvia, continued corresponding with Verdi for several years afterwards. In Louise Marley"s 2010 novel Mozart"s Blood, Saporiti is the main protagonist, turned into a vampire (along with Mozart) during the preparations for Don Giovanni"s premiere.
Most of the novel, however, portrays her in the 21st century, and the sections portraying Saporiti"s historical career are largely inconsistent with the record.