Yes their tastebuds are more sensitive, I think it is between 2 & 5yo that they are the peak of sensitivity, I think it something like 100 times more sensitive compared to an adult. I think it is also they test out what they can eat & know foods they like, but they are more sensitive to the taste... I think it is moreso with spirited children too.
Totally agree, been there, and
for once followed the advice from the 10's of friends (non BW'ers) who had children (many 3 and 4 of them) much older than N;
"Don't stop offering, even food you KNOW they do not like at whatever age, they are fickle, they will love something, then go off of something due to textures, colours etc...accept this and say to them ok, we'll try it another day and keep offering. This will go on for years and years. Always keep offering."
I followed this and they were right. He is always willing to try too, which is awesome, unless really offensive, (I offered him some sardines) and he smelled them and said no way, not even trying, do you blame him?
I offered N blueberries and grapes when he was in his 2's and no go, I could not believe it, I never gave up, offered here and there and now, requests that I buy them.
So glad I listened and didn't just say, oh I guess he does not like fruits with skins.
Not a lot of things are for the rest of your life in life, it seems.
HUGS, I remember being frustrated.
To give you hope, Ds just ate a spinach, artichoke and feta cheese pizza.
Ps. for spirited LO's I was recommended giving him peas, berries and mango frozen, he preferred them frozen than to normal! He still has frozen peaches and mango for a snack. He likes the sensation of cold, always has. He eats his peas normally now lol.