RISTRA is a playable word

ristra Scrabble® Dictionary

noun
pl. ristras
a string on which foodstuffs are tied for storage
49 Playable Words can be made from "RISTRA"
   2-Letter Words (9 found)
   3-Letter Words (18 found)
   4-Letter Words (13 found)
   5-Letter Words (8 found)
   6-Letter Words (1 found)