Barley green juice is a kind of natural pigment powder which can replace the edible pigment in baking. It is safe and healthy. In addition, it is worth mentioning that the color stability of barley clear juice is better than that of Matcha powder. It is not easy to oxidize and discolor. Chinese yam has the effect of nourishing and strengthening, helping digestion, gathering sweat and relieving diarrhea. Here I choose yam and milk powder instead of cream. It's more nutritious and healthier. This is my original intention to learn from a nutritionist. As for the use of oil, I have repeatedly emphasized the use of animal butter in the recipe of cake in front of me. Vegetable oil will produce trans fatty acids after high temperature. I won't say much about its harm.
Step1:Prepare the above ingredients. Wash yams and steam them in a steamer. About 25 minutes. When waiting for yam steaming, take two clean basins. There should be no one drop of water in them. Otherwise, it will directly affect the pastry. Separation of egg white and yolk.
Step2:Add 20g white sugar to the yolk.
Step3:60 g butter softens into a liquid.
Step4:Pour the softened butter and milk into the egg yolk paste and mix well.
Step5:Mix 100g low flour and 4G barley clear juice.
Step6:Sift the mixed low powder into the egg yolk paste. Stir evenly without granules.
Step7:Send the egg white.
Step8:Add white granulated sugar in three times, respectively in big bubble, small bubble and delicate state.
Step9:When it's lifted, it's crooked. Be careful not to over pass. Otherwise, the surface of the cake will crack.
Step10:Add the beaten protein into the batter in three times. Note that when mixing, you should draw an X word. Do not draw a circle to avoid defoaming. Take a 28 × 28 baking tray. Spread the oil absorption paper for easy removal. Pour the mixed batter into the mold. Preheat the oven to 180 ℃ and bake for 15 minutes. Each oven brand is different. The required temperature and time are different. Adjust according to the situation. My home is ACA oven is 170 degrees 40 minutes. Now it's Hitachi, so the gap is quite big.
Step11:Take out the cake and turn it upside down until it's warm. Then roll it up with oil absorbent paper. When rolling, push the roll with a rolling pin. I forgot to take a picture of this step. I have taught it in the previous recipe. After rolling, tighten both sides to cool.
Step12:Press the steamed yams into mud. Pour in the milk powder and mix evenly. Put it in the decoration bag. Extrude the wave shape.
Step13:Cut the strawberries in half and decorate them on the cake roll. Finished product drawing.
Cooking tips:Make sure the egg basin is clean and free of water. When separating the yolk and egg white, you should also pay attention to the fact that there is no yolk liquid in the egg white. All of these will directly affect the egg white. Don't overkill the egg white, or the cake surface will crack. Of course, too high temperature will also cause the cake surface to crack. There are skills in making delicious dishes.