I made a simple vegan cheesecake: coconut fat from coconut milk blended with pre-soaked raw cashews. Turned out real nice but the only thing is a strong coconut flavour.
Is there a way to neutralize it somehow?
Definitely not if you're getting the fat from coconut milk. Using refined coconut oil would definitely help, but getting it to blend and stay emulsified might be a challenge. Lecithin from a soy product might keep things together– I use it in place of egg to make vegan mayonnaise. All of that saturated fat is pretty tough to emulsify though. Maybe a combination of your coconut milk fat and refined coconut oil? Good luck!
You can neutralize the coconut flavor using a very small amount of baking soda. It works as a base to neutralize the lauric acid in the coconut, which is the "soapy" flavor mentioned in the first link below.
I tried it out and found it neutralizes the whole coconut flavor very nicely, but I recommend adding it to your recipe a very small amount at a time (1/4 teaspoon or less if possible) because if you add too much, the taste of baking soda becomes very prevalent.