tocino del cielo

1/2 cup white sugar for the caramel
1 1/2 cups white sugar
1 1/2 cups water
1/2 cup butter
10 egg yolks

1. Caramelize the 12 cup white sugar. When the desired color is reached, pour a little into the flan containers, just enough to cover the bottom thinly.
2. Heat the oven to 350 degrees F. Boil 1 1/2 cup white sugar and water until you register 220 degrees C on the candy thermometer. Do not stir syrup. When done, add the butter and stir.