葡萄干奶油卷 | Pains aux Raisins

Ingredients        
Croissant dough 500g→牛角面包 | Croissant
250g French T55 flour（180g bread flour + 70g cake flour）
25g  sugar
5g salt
5g milk powder
1g malt extract
9g fresh yeast
120g water
12g eggs
25g unsalted butter
125g  butter （For folding）

Custard Cream Filling
40g egg yolk (2 pieces)
Sugar 40g
Pastry flour (or corn starch) 20g
Whole milk 200g
1/4 vanilla seeds (take 1/4 of a vanilla pod, and scrape out the seeds)

Dark raisins 100g
Mandarin Orange Wine 5~10g (or other  wines, such as Cointreau, dark rum, etc.)
Ground cinnamon   2g

Croissant dough#Cookies bread#raisins rolls#Bread