In a pot, bring to boil milk, sugar, butter and vanilla beans.
Strain onto the flour and mix to dough consistency.
Add egg yolks to dough.
Pour dough into pipping bags with star nozzle.
Pipe into vegetable oil at 180 degrees.
Fry till golden brown.
Set aside on paper towel to dry off excess oil.
Dust in castor sugar.
Heat the condensed milk and whisk in the chocolate till silky consistency.
Add milk and rum to taste slowly.
Serve churros with chocolate sauce.
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