In a pan mix milk with strong barley coffee. Take about half a cup of the liquid and blend with potato starch, egg yolks and vanilla extract. Set aside.
Add butter and sugar to the pan and stir until the sugar is dissolved. Bring to a boil. Lower the heat to a minimum and, stirring constantly, pour in milk and starch mixture. Continue to stir gently, wait until the pudding thickens and comes to a boil again. Cook for another 30 seconds. Pour into cups and serve hot or cold garnished to your liking.
Notes
The nutritional values are generated automatically for indicative purposes only and are therefore not completely accurate.