Is it too soon for table discipline?

Moriah

My Daughter (16months) has always been pretty good with food, and previously if she has refused something its usually too spicy or a new food so I just relent and give her something else.

Is it too soon to start enforcing rules at the table like "you eat what's given or don't eat at all" or "if you wont eat it I will and its gone"?

I've thought about also doing the "if you don't eat it now it'll be in the fridge when you're hungry but that's the only thing you'll be getting" but i feel that's a little too complicated for her right now to understand...

And of course I will not make her eat something that is too spicy, I only used that as an example earlier just to clarify.

What are your thoughts? What do you do in these situations?