The Clue Salt carrier, at times
The Answer RIM
The answer "RIM" fits the clue "Salt carrier, at times" because a rim can refer to the edge of a container that holds salt. In cooking, salt can be found on the rim of a glass for drinks like margaritas. Additionally, the word "rim" can also mean the outer edge of something, which can be associated with carrying or holding items. Thus, it connects to the idea of a "carrier" in a creative way.