Cook for a few minutes. Don't let the onions ginger and garlic brown.

Add the water. Stir and cover. Let the mixture boil on medium heat for an hour.

After an hour, remove from heat and let it cool.

Once cooled, transfer all the mixture into a blender.

Transfer to the nonstick skillet and add the other tablespoon of melted butter, black pepper and some salt to taste. Cook over very low heat while stirring frequently.

Immediately add in all the milk. Stir well and make sure all the milk is incorporated. Leave it to simmer for ten minutes.

Add the coriander. Stir and turn off the heat.