DS1 (2.7yo) isn't keen on getting messy, doesn't like the feel of certain things on his hands, won't have his face dirty, etc, etc.
He doesn't like "raw" things - won't eat salady things, or raw fruit except bananas, but does eat vegetables in "proper dinners". He won't eat raw or cooked apple EVER. But I'm allergic to apples, so I wonder if he is too - they make my mouth itch and my gums swell up.
He won't eat breadcrumbed food, or chocolate or sweets and has only recently (like a fortnight ago) eaten ice cream willingly.
A typical day's food for him might be porridge with raspberries for breakfast, a packet of "letter biscuits" (Goodies alphabet biscuits with seeds - he loves them), lunch might be soup and toast and a yoghurt, snack of a banana "chopped up in a bowl with a fork", then dinner of cottage pie with peas, carrots, cauliflower and sweetcorn, and maybe another yoghurt.
DS2 (10mo) is different. He has NEVER minded getting messy and food frequently lands up in his hair, his eyebrows, all over his hands - he will squish anything and wipe it down his face with his mouth open and eat what goes in. His very favourite is cucumber, which he gnaws on in the manner of a squirrel with a nut. And he discovered raisins the other day and said "Mama" and looked hopefully at me till I gave him more
A typical day's food for him might be a banana, some raisins and a play in a bowl of firmish porridge, some toast, cheese, cucumber, celery, red and yellow pepper and a peach for lunch, some bits of meat, potato, cauliflower, peas, sweetcorn, carrots, and copious bmilk. Broccoli gets dumped over the side very speedily, sweet potato is poison, but other than that, I've not found anything he won't eat.
But even though they're very different, I treat them the same. They both get what I want to cook, they can eat as much or as little of it as they want, I don't make them try new things, I don't cheer when they do, just ask if they like it and talk about the shape of it, the colour of it, what it smells like, etc.
I will ask DS1 if he wants some of something I'm eating (be it fruit, vegetable, cake, chocolate, whatever) and he usually says no. I will often leave some of whatever I'm eating near him and he sometimes helps himself to it and tries it.
He was desperate to grow "cress in a pot" over the summer, having seen Pip Gooseberry do it on Fifi (who says TV teaches them nothing ) and he was very excited to watch it growing - but he didn't want to eat it and I didn't see the point of making him.
I don't believe in food being treats, but obviously there will always be some things that people like more than others. DS1's "treat" is an M&S sandwich, for instance. Or finding "red beans" (kidney beans) in his dinner. Or the aforementioned banana chopped up in a bowl with a fork. Or some Twiglets - although he's not had those for a while. Or chips with ketchup.
I've never, ever done the "one more mouthful" thing - I do occasionally ask him if he wants me to help him - if I know he's tired, for instance. DS2 won't let me help him - he has to do it all himself.
I know people who read books to their children, let them play with toys at the table, bribe them with TV, pudding - and I think that it's very easy to fall into the way of doing this. It's just not how I choose to do it - I want the boys to love food, but know when to stop eating it and not be so distracted they don't recognise the "full up" signals.
Oh, one other thing - I don't distinguish between "now your dinner is over and will be cleared away" and "here is your pudding" - I often will leave dinner on the table while DS1 eats his yoghurt - and he'll usually go back to his dinner after he's had his pudding.
I'm basically v laid back about food. I have written the longest post in the history of the world to tell you that though, so maybe I have more hang-ups than I thought