Friday, 2 October 2015

Purple sweet potato egg white butter cookies 紫薯蛋白奶油饼干 (中英加图对照食谱)


Using the purple sweet potato powder I made 2 weeks ago, I have baked these butter cookies and am happy that it turned out a beautiful purplish pink which is acheived by using all natural colouring and nothing artificial at all! These cookies used egg white only so if you have leftover egg whites from previous bakes, this will be a good recipe to consume it. :) 


Purple sweet potato egg white butter cookies 

Ingredients: (makes about 12 pieces)

115g unsalted butter, room temperature
50g icing sugar
30g egg white
110g cake flour (I used Blue Jacket premium cake flour
50g homemade purple sweet potato powder *(click here for recipe) 

*If you are using store bought purple sweet potato purple, you may not need to use so much as the colour will be darker compared to homemade ones. Please adjust accordingly. 

材料: (可做 大约12个)
115克 奶油,室温
50克 糖粉
30克 蛋白
110克 低筋面粉 我用水手牌优质蛋糕粉
50克 自制紫薯粉*点击’看自制紫薯粉的食谱与做法) 


Method 方法:

1. Mix the flour and purple sweet potato powder well together. Set aside. 
1。面粉与紫薯粉混合均匀, 备用。 

2. Use a hand whisk to cream the butter and sugar together. 

3. Add the egg white in gradually and mix well together. Use a silicon spatula to fold in the flour mixture till well combined. 

4.  Transfer to a piping bag. 

5.  Pipe the cookie dough onto a baking tray laid with non-stick baking paper or baking mat. (I used Wilton 1M tip)

6. Bake in a preheated oven at 150 degree Celcius top/bottom heat fan forced for 12~15 minutes.  

7. Remove from oven and transfer to a cooling rack, store in an air-tight glass container after it has cooled down completely. 

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 The cooking temperature as suggested in all my recipes serve as a guideline. Every oven has different thermostat, you may have to adjust the temperature and timing to suit your oven. Different brand of ingredients have different composites, thus there may be a slight difference in the end result.  食谱里的烘烤温度和时间只是供参考,每一架烤炉的恒温器都不同,请自己调适。不同品牌的材料有不同的复合材料,所以最终成品有可能稍有不同。

“It takes time and effort to compose or translate recipes, I would appreciate it if you do not copy and pass it off as your own recipe. If you wish to share or adapt any of the recipes that I have posted in this blog, please provide a link back to the relevant post here. Thank you.”


LY's Kitchen Ventures said...

Hi sis, I'm seeing alot of butter cookies recently...Yours is gorgeous!

Unknown said...


Cheryl - Bakingtaitai 烘焙太太 said...

Unknown - 不明身份的人, 请留下名字我再回答你。

Christine said...

Hi Cheryl, thanks for the recipe and would very much like to try this cookies, but where can we buy the powder or how can we do ourself? Appreciated your early reply, thanks.....christine

Kimmy said...

Hi Cheryl, thanks so much for sharing this lovely cookie recipe and also the homemade purple sweet potato powder recipe. It's great. Hope I can made these as good as you,

Sharon Lam said...

I love the naturally coloured hue! gorgeous rosette cookies too!

Cheryl - Bakingtaitai 烘焙太太 said...

Hi Christine, if you are residing in Singapore, you can buy purple sweet potato powder at Kitchen Capers. To do it yourself, scroll up to "Ingredients", the line where homemade sweet potato powder is found, if you look carefully, there is a bracket besides it which says " Click here for recipe', it will lead you to my step-by-step recipe post on how to make your own purple sweet potato powder.

miSSeY fRozzy said...

Hi Cheryl, to use the homemade sweet potatoes powder in bakes, do we replace the sweet potatoes powder with the same amount of flour required in the recipe? Thanks in advance...

Cheryl - Bakingtaitai 烘焙太太 said...

Hi misery frizzy, as you have to use quite a substantial amount of homemade purple sweet potato powder in order achieve a more vibrant colour, you can't replace with the same amount of flour, you will have to adjust accordingly depending on your bake.

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