Carrier foods - as in chips, crackers, bread, etc. Things that aren’t the focal point of the meal/snack, just used as support of whatever food you are truly wanting to eat but isn’t as appetizing on it’s own.
ETA: more clarification - foods that sometimes quite literally “carry” the food to your mouth. I like port wine cheese, but not by itself. So the cracker I use to eat it would be the carrier.