In a large bowl place all of the coconut followed by the condensed milk and vanilla extract. Mix thoroughly.
Your mixture should be sticky and wet looking. If it isn’t clumping together nicely when pushed together you need to add more condensed milk. I normally add 3/4 of the tin to start with, mixing and then checking the consistency. Depending on your ratio of coconut you may need to add more or less condensed milk. I then add the remainder of the condensed milk in small amounts, mixing as I go until I get the right consistency.