My 17 month old is a fussy eater too. She used to eat anything, then at around 15 months got very selective. Now she has a limited range that she will eat which covers most of the food groups (luckily), but like your little one, will only eat one kind of meat - in spaghetti bolognese sauce. She is even fussy about the shapes of pasta she will eat and won't put anything new in her mouth at all. I am adamant like you that she is only going to eat healthy food and never ever offer her something sweet as a replacement because I know that she will want that and nothing else. I think if you get into that trap you will have a loosing battle on your hands, I've heard other mothers say "he/she will only drink cordial" and I think, why did you offer that in the first place? My 5 year old didn't even know what a lolly was until he was 3. Sounds mean but it worked for him, he is really a healthy eater. But I know how hard it is. I guess on the bad days you could give him some little bits of something (cheese, crackers?) and a glass of milk before bed so you know he won't starve and keep offering foods that you want him to eat every day (apparently you have to offer things up to twenty times before a toddler will accept it!) and soldier on. Sorry, not great advice but I just wanted to sympathise as I know how frustrating it is! Hope it works out for you.