“Nut brown ale does not contain any nuts.”
OTOH, for everybody who keeps claiming that “nut brown skin” and “nut brown hair” are descriptions of black people in medieval England… the brewery describes nut brown ale as being “dark amber” in color. Basically, it’s beer-colored; it’s just a slightly deeper reddish brownish yellow. So anybody with a decent tan, or someone with reddish blondish brown hair (as opposed to mouse or dark brown). Clearly the nut in question wasn’t a walnut, because “walnut” is a separate descriptor, associated with walnut shells and walnut-stained hands.
I can’t help you with “brown as a berry,” but apparently juniper and cedar berries are brown.