0.75cup (6 fl oz / 180ml)coconut milk (unsweetened, full-fat canned or carton)
Frozen is Non-Negotiable: For that thick, ice-cream-like texture, you must use frozen pineapple. Using fresh fruit will result in a watery juice unless you add ice, which dilutes the flavor.
Shake the Can: If you are using canned coconut milk, the cream often separates from the water. Open the can and whisk it thoroughly (or shake the carton vigorously) before measuring to ensure you get a consistent creamy texture.