Date Egg-yolk Puff Pastry (蛋黄酥)

Use the same steps and ingredients as the Date Chrysanthemum Pastry(枣泥菊花酥), except wrap a cooked salty egg yolk in the middle. Some recipe suggested to coat the salty egg yolk with oil and leave it overnight; then coat the egg yolk with liquor and steam for 15 minutes; use after it is cool. I was impatient and just dipped the egg yolk in oil and used directly.