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1
Place mashed yam in a pan/wok.
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2
Add salt, sugar (Note 2) and oil gradually into yam paste, a small portion at a time.
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3
Keep stirring at all times.
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4
Cook until the paste leaves the sides of the wok clean when stirred.
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5
Set aside to cool.
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6
Measure 640g of yam paste for mooncakes with no yolks, OR 480g for mooncakes with yolks.
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7
Add melon seeds (if using) and mix well.
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8
Divide into 8 equal portions (Pic. 1) and roll each into a ball.
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9
Wrap an egg yolk into each ball (if using yolks).
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10
To prepare water dough: Sift flour and icing sugar into a mixing bowl.
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11
Make a well in the middle and gradually pour in the corn oil and water.
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12
Mix well and lightly knead for about 1 minute until a non-sticky dough is formed.
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13
Leave the dough aside and go on to prepare oil dough.
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14
To prepare oil dough: Sift flour into another mixing bowl.
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15
Mix shortening with flour well.
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16
Do not knead this dough (Note 3).
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17
Divide water and oil dough into 4 portions (Pic. 1).
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18
Each water dough should weigh 100g while each oil dough should weigh 67g (Note 4).
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19
On a lightly floured surface, roll out a water dough.
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20
Wrap an oil dough with this water dough (Pic. 2) to form a ball (Pic. 3).
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21
Use a rolling pin to roll out the dough in Step 6 as shown in Pic.
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22
4 (Note 5).
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23
Roll as swiss-roll (Pic. 5).
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24
Give the dough a quarter turn and roll out the dough length wise again.
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25
Roll as swiss-roll (Pic. 6-7).
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26
Divide it into 2 equal portions (Pic. 8).
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27
Repeat the same procedure for the remaining water and oil doughs.
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28
These pastry skins are ready to be used.
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29
Lightly flour (using cake flour) the working surface.
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30
With the cut side face down, roll out the dough such that the edges are thinner than the centre (Pic. 9).
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31
Wrap yam paste ball and seal the edges (Pic. 10, Note 6).
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32
Repeat to shape remaining mooncakes.
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33
Place mooncakes on a baking tray lined with grease-proof baking sheet.
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34
Bake in a preheated oven at 180 degC for 25-30 minutes or until cooked (Pic 11).
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35
Transfer mooncakes to a wire rack and let cool.