Wiktionary
n. (context cooking English) caramelized remnants of meat left in a pan after the cooking of the meat, which are often re-cooked in wine or other liquids and then absorbed into cut vegetable pieces in order to make sauce or gravy.
Usage examples of "brown bits".
She was a large woman whose hair was dyed platinum blonde except where you could see the mousy-brown bits growing out from the roots.
When I tried to unfurl it, it crumbled into tiny brown bits and blew away on the wind.
What it craved was little crunchy brown bits, the food group of the gods, and Sybil reliably always left the pan too long on the dragon.
I notice the dead brown bits on the leaves of the plants in the lobby have been carefully trimmed awayalways a telltale sign of a thriving firm.
The dash of the wag held some fragile old maps, creased and crumpled, which were held together with brown bits of tape and frayed string.
As she trotted along the beach, she ate the red fruit, discarding the blemished side where a mold had gotten at it, just as she had once eaten windfall apples and thrown away the brown bits back on Earth.