The point is that you bond with Pokémon. Pokémon get hungry too! Lol. Along with the playing feature, talk to me feature, and calling two Pokémon to play, it makes you feel like a “real” trainer that you can cook for them. It’s also gives the player an extra thing to do, such as completing the CurryDex or raising friendship with all of your Pokémon. They eat the curry no matter what, but the higher rank you get, the more XP and friendship galore!
Koffing class: You put too less Fire! You stirred it up too fast! And you put never put your heart in it! So, you Pokemon's HP were restored by a little bit. Your Pokemon gained a few Exp. Points. Your party got friendly toward you!
Wobbuffet class: You did the fire decently, you stirred fast again, you just barely put your heart in! So, your Pokemon's HP were restored by half. Your Pokemon gained a few Exp. Points. Your party got friendly toward you!
Milcery class: the fire is great, you stirred correctly! You could’ve gone a little faster, and put your heart in sooner/later. But you did well! So, your Pokemon's HP were restored, and any status conditions were healed.
Your Pokemon gained Exp. Points! Your party got friendly toward you!
Copperajah class: your becoming a pro! That Fire is gonna last a while. You stirred without 1 single drop falling! And you put your heart in like a champ. So, your Pokemon's HP and PP were restored, and any status conditions were healed. Your Pokemon gained a lot of Exp. Points! Your party got quite friendly toward you!
Charizard class: the fire is blazing strong, and bright! You stirred fast, but nothing fell! When you put your heart in, you see a pillar of light coming from the curry! So, your Pokemon's HP and PP were restored, and any status conditions were healed. Your Pokemon gained a lot of Exp. Points! Your party got very friendly toward you!
It’s also nice that you get lots of XP from making a Charizard class curry. Makes training easier without the hassle. And all you need are berries! If you cook a curry, but don’t want to add a key ingredient, you push the “+” button no you can make a curry, spicy curry, dry curry, sweet curry, bitter curry, or sour curry. Or you can do what’s normal, adding a key ingredient. But you can’t do it without berries! Friendship is also important — once you bond enough with Pokémon, they can do things like withstanding any attack at 1hp, landing more critical hits, or give you items while camping.