Another angle: The phrase "sugar and spice" often relates to girls in the nursery rhyme "This is the House That Jack Built." So maybe "sugar and spice quartet" refers to four elements associated with this rhyme. Alternatively, a product mix or recipe with four items combining sugar and spice.
Alternatively, "qartulad" could be a phonetic of "quadrille," a 19th-century dance, or "quadroon," a person with one-quarter African heritage. But connecting that to sugar and spice is a stretch unless it's a cultural context. sugar and spice qartulad
Alternatively, maybe it's a misspelling of "quartet" (four people or things), but the user added "ad" to the end. Or perhaps "qartulad" is a phonetic spelling of another word in a different language. Let me think about other languages. In Greek, "tetrades" are quartets. In Latin, "quartus" means fourth. But the "q" is still confusing. Maybe it's a mix-up of "quartet" and another word. Another angle: The phrase "sugar and spice" often