___ & Perrins (sauce brand) (3)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
lea
(Other definitions for lea that I've seen before include "authority for teachers" , "River of east London" , "Poetically, a piece of meadow or pasture" , "Meadow (poetic)" , "Open grassy land; river" .)