When dd was little, she hated potatoes in any way, shape, and form including french fries. We didn't eat out that often and I wouldn't have had any problem with her getting fries with her meal but she'd always have me ask for a salad or a fruit plate or applesauce instead. A lot of times, the waitress would give her a pitying look like I was just being mean.
She's 15 now and still won't eat mashed potatoes. I have no idea where I went wrong.