1. Whisk the milk until frothy, then pour into a saucepan along with the, cloves, ground cinnamon, cinnamon stick, orange essence and ground nutmeg. Set to a medium-high heat. 

2. After a couple of minutes, dissolve the instant coffee into the milk while it’s warming up, and continue to heat.

Step 2: Gradually Introduce Eggs to Heat

1. Beat the yolks in a bowl for about a minute
2. When the milk starts to boil, lower the heat to the minimum and remove one ladle of the milk.
3. Add the hot milk to the yolk mixture and keep beating.
4. Add the yolk and milk mixture to the milk on the heat, stir and allow to thicken.
5. Take the heat to medium and allow to cook for another five minutes or so.

Step 3: Remove Heat and Add the Liquor

1. Now take the pot off the heat and allow to cool.
2. Add the pisco and the vanilla, and any more spices or sugar, according to taste.
3. Strain out any lumps or bits in the liquid and serve with ice once completely cooled.