How do you deal w/ a picky eater?

I found this question but would like more ideas and input.

I have two preschoolers. The older child is the picky eater. He will fixate on a particular food item at a meal and refuse to eat it….

Is it OK to allow kids to “cherry pick” what they eat?

Do you require your kids to try everything?

I certainly do not agree w/ a “you must clear your plate” attitude nor will I make special/separate foods for one kid. I think that is a slippery slope.

I realize that he will not starve. My question is more about how to avoid mealtime battles.