Add all the ingredients into the blender. Blend them until you get a smooth paste.
Pour the paste in an ice bucket and with a spatula flatten it and remove the excess.
Put it in the freezer. When it is frozen, take the cubes out of the ice bucket, put the portions in a freezer bag and store them back in the freezer.
When you need to use them just grab 2-3 of them and add directly. They can be used for two months.