If using canned pineapple, add approximately 1/4 cup juice from the can (which should basically be all the juice from an 8-ounce can). If using fresh pineapple, you’ll want to add 1/4 cup 100% pineapple juice.
You don’t need to add the coconut butter, but it adds a rich, sweet coconut flavor that makes this more of a pineapple coconut matcha smoothie. I highly recommend! Make sure it’s melted before adding or you’ll wind up with little bits of coconut butter swimming in the smoothie. If you want to cut back on the fat/calories a bit, you can use ONLY the coconut butter, omitting the oil.