Place can of coconut milk in the fridge overnight. This is a crucial step. You need to chill the coconut cream until it’s very firm.
Remove the chilled can from the refrigerator and flip it upside down. The liquid coconut water, that doesn't harden, will now be on top. (see photo below)
Using a stand mixer fitted with the whisk attachment, or an electric mixer, mix at high speed approximately 2–3 minutes, until fluffy and creamy.
Add the maple syrup, if using, and continue to mix until the coconut cream is light and fluffy (about 1–2 minutes), scraping down the sides of the bowl as needed.
Use immediately, or refrigerate for up to 2 days. Just be sure to whip cold coconut cream for a minute or so to ensure that it’s light and fluffy.