A verb appearing as ᴱQ. tyuru- in the Qenya Lexicon of the 1910s with the gloss “to ‘turn’ milk, curdle (blood etc.)” derived from the early root ᴱ√TYURU “curdle” (QL/50). The form Q. tyuru- is also mentioned in the contemporaneous Gnomish Lexicon of the 1910s as related to G. cûr “cheese”, but it isn’t clear whether this is a reference to the verb or the root (GL/28).
Neo-Quenya: I’d retain ᴺQ. tyur- “curdle” for purposes of Neo-Quenya, derived from a Neo-Root ᴺ√KYUR.
The word for “cheese” in the Qenya Lexicon of the 1910s was ᴱQ. tyur (tyurd-) derived from the early root ᴱ√TYURU “curdle” (QL/50). This became ᴱQ. tyurme “cheese” in Early Qenya Word-lists of the 1920s (PE16/141).
Neo-Quenya: I’d use ᴺQ. tyurmë “cheese” for purposes of Neo-Quenya, derived from a Neo-Root ᴺ√KYUR.