Hi! My daughter started solids at 5 months, and the "shudder" is perfectly normal. Remember, your LO has never tasted anything but breastmilk before, right? The whole world of different tastes is very, very new. For awhile, expect every new flavor to get its own shudder.
I want to offer a counter-view of the ones already mentioned. Since your LO is just starting out on solids, why not give vegetables before he really gets hooked on sweet fruits? Baby rice cereal is, of course, the standard starting food, and there's nothing wrong with that. In our house we introduced foods in this order: baby rice -- carrots -- peas -- other baby cereals -- green beans -- squash -- sweet potatoes. Only after 3 months or so of solids did we introduce fruit. This is so that the "vegetable taste" would be truly ingrained first, so that a "sweet tooth" doesn't reign and cause her to reject veggies. Now, at 11 months, she eats pretty much everything, but still prefers vegetables more than anything else!