Middle Primitive Elvish
pas
root. *juice
pis
root. *juice
sāba
noun. *juice
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
This root was one of a surprisingly large number of roots Tolkien used for “juice”, appearing unglossed in The Etymologies of the 1930s with derivatives like ᴹQ. pirya/peich “juice, syrup” and N. pichen “juicy” (Ety/PIS). A similar primitive form ᴱ✶pisye appeared in Early Noldorin Word-lists from the 1920s, with derivatives ᴱQ. pihye/ᴱN. hí “sap, juice” (PE13/147). This in turn might have been a later iteration of unglossed root ᴱ√PḶQḶ from the Qenya Lexicon of the 1910s with a single derivative: ᴱQ. pulqe “juice”.
Neo-Eldarin: For purposes of Neo-Eldarin, I would assume this root refers mainly to syrup and tree sap, as opposed to fruit juice which would be derived from ᴹ√SAB.