Mushroom is OK.. But is it OK to cook mushroom? Actually i don't know which group mushroom is included? Is it vegetables?

I just want to add Candida diet today to get more relieve because as far NSD work for me but the there is still some pain and stiff. But i want to learn it more. And i read that i must remove fruit, but i confuse about coconut. Is it fruit group or nut group? I love to eat coconut. And anyone know why must i remove vinegar in Candida? I don't think it contain sugar.