Parents can easily use hunger to their advantage -- it won't get kids to eat everything, but presenting something unfamiliar to kids as a "first course" will generally make it more likely that they will eat more of it... simply because they're hungry.
Of all the dumb ass psycho babble crap about parenting I've read, this has to be disconnected overly simplified load of shit ever. Do you actually know how long it takes to starve a kid into submission? It's not exactly a matter of sitting there for an hour or two to win an argument. If the kid doesn't want to eat it, they are not going to eat it. They figure out pretty early on that you aren't a lunatic and that you love them too much to actually shove a funnel down their throat and force feed them. A little later on they, hopefully, realise "Hey, my Mom and Dad aren't useless sacks of trash and I get fed multiple times a day, every day, on a pretty regular basis. I can afford to skip this meal if I want to.". After those two things happen, literally the only way to introduce new food that is in anyway different looking is through siege craft. You both sit at the table with a plate of food arranged somewhere between you and them. You as a parent try in vain to tell them how good it is and that they should just try it, "Just one bite.", "You can have ice cream after you finish.", "You can stay up and watch TV." but you know full well that you're just making noise to pass the time and that this is just the start of the battle. Eventually bedtime rolls around and you either tell them to go to their room or you tell them to sleep at the table if they have to but they are not getting up until they have eaten their food, either way the result is the same. You end up wrapping the meal up in a tupperware container in preparation for the next fight. Morning rolls around and your kid asks you about breakfast. You sit down with your plate of eggs and sausage and tell them that the only thing they are getting is the dinner that they didn't eat last night. They huff and puff as expected and the stand off starts all over again. You repeat this for the next meal if you have to until they finally break down and eat what you gave them.
I literally just went through this with my kid. And do you know what the most fucked up part of it was? It was chicken alfredo, she loves chicken alfredo we just haven't had it in a while so she had forgotten. Four miserable meals later, at dinner the next day, she finally takes a bite and says "Hm, this is actually pretty good." and the plate was clean in less than five minutes. Yeah, I can tell you for a fact that anyone who has ever said "Oh, I have never thought about hurting my kids in anger!" is either a parental doormat or they are just plain lying to your face.
I know exactly what you're thinking right now because it's the same thing every new parent and DINK thinks at this point. "I bet after you do that they learn to eat what you give them.". Hahahaha, no. This isn't like setting up a new server where it's a few hours of pain and then you are done with it. This is a regularly recurring theme.