Cost vs Customer Control

Last night I went to a local restaurant to purchase dinner for my family. I like this place. The food is eclectic and well prepared. They had a special written on their chalk board. It sounded great, turkey meatloaf. I knew that their version would be perfect and I ordered it.

The waitress told me it came with mashed potatoes and wilted spinach. Well I am watching my carb intake and I asked if they could substitute vegetables for the mashed potatoes. She thought not, but would go in the back and ask the chef. The answer came back