Tasty, Delicious
い adjective
Something with a beauty taste is something that is really tasty or delicious. Mmmm, yum! While 美味しい mostly describes tasty food, you may also occasionally see it being used for a sweet deal or situation that benefits you.
おいしい
The reading for this makes no sense at all. You'll have to learn it straight up, that is, unless you know the word おいしい already, which many people do as it's used in every other sentence in every Japanese variety show. If you don't know this word already, just think of yourself eating something delicious. It's so delicious it makes you mad, I have no idea why. You yell at the chef: "OI (おい). OI! WHY IS THIS SO DELICIOUS????"
この料理はとても美味しいです。
This dish is very delicious.
そのベーカリーのクロワッサンは、とても美味しかったです。
The croissants from that bakery were delicious.
正直、この会社のこのチームで働けるのはかなり美味しいです。
Honestly, working with this team at this company is quite fortunate.