First, remove the stalk and peel from the pineapple. Divide into small pieces and puree well in a blender.
Then bring the millet flakes with the vegetable milk to a boil in a pot or large pan, turn down to low and mix with the pineapple puree.
Simmer for about 10 minutes, stirring constantly.
After about 10 minutes, a mushy mixture should have formed and the millet should be soft.