Peel and dice potatoes into 1 inch pieces
Add potatoes to a pot and cover with water
Bring to a boil and cook until potatoes are really soft
Drain potatoes and add to a large bowl
Mash potatoes using a potato masher
Add brown sugar
Add Vanilla extract
If using the orange or pineapple juice then add it now
Add the melted butter
Once potatoes have cooled most of the way you can add the eggs and incorporate well so there's no streaks of cooked egg whites
At this point if you feel like the potatoes need some milk you can add some, about a tablespoon at a time, but I usually don't