Does anyone only serve their toddler one thing and expect them to eat it or just go hungry?

My daughter just turned 1 and I can already see her manipulating us into serving her only what she wants. For example she will refuse to eat anything except oranges, and then eat 4 of them! We tried serving her healthy things first, and only her favorites later, but now I think she knows it's coming and will hold out for the "good stuff".

Just wondering how early anyone has implemented this tactic and how long it took your child to respond to it. I'm hesitant to start doing this before she can communicate to me what she likes and dislikes, but I also think daycare is already doing this (since we only send one lunch) so it should be possible to do it at home, too.

Side note: we have a general parenting philosophy that boundaries are important and our child will learn to expect the boundaries we set up. So I kind of feel like this is just setting another boundary and she will adapt to it.