Notes: I’ve used agar agar flakes in here, and even though I’ve blended all the ingredients in the food processor before actually start cooking (as it’s suggested below), I could still feel some little pieces of agar which haven’t been blended properly. They were so few I actually didn’t mind, but if you want to avoid this, use powdered agar instead – you have to use less, I’d say ¾ to 1 teaspoon (I haven’t tested, so this is merely referential). On the other hand, feel free to use a vanilla bean (split in half, lengthwise, seeds scrapped straight into the pot) instead of vanilla extract.