Place 3 tablespoons of sugar in each mould. Set llanera over low heat until sugar is melted and golden. Using tongs, move or shake llanera repeatedly over flames to prevent sugar from burning and to distribute melting liquid on the bottom of mould. Remove from heat and allow caramel to cool and harden.
In a mixing bowl, combine the egg yolks, fresh milk and condensed milk. Gently stir in a circular motion until blended.
Cover the moulds with foil and cook in a steamer for approximately 30 to 45 minutes. Alternatively, bake in a 375 F oven for about 50 minutes to 1 hour. To check if the custard is cooked, insert a toothpick in the middle of the flan. If the toothpick comes out without traces of the custard, it is cooked.
Remove from the steamer/oven, allow to cool and refrigerate to set. To serve, turn flan over on a serving plate, ending with the caramel on top.