I followed a plain sponge dough recipe from this book to make the green tea rolls and I've just added a tablespoon of matcha into it, however, I hardly taste the green tea flovour. I shall say my skills of making bread is still not up to the standard as you can see the rolls doesn't look in good round shape. If anyone have a good skills please please teach me and I will try to improve next time.
I used half of the original recipe to make 9 rolls and add 1 tablespoon of green tea powder. I put together all the ingredietns to my dough mixer except butter. Knead for about 15 minutes then I add butter and continue kneading until the dough well developed. I rest it in a grease bowl with cling film for about 40 minutes at room temperature then I divided it into 9 balls and rest for another 25 minutes covered with damp towel. I flatten each small dough to add in a red bean paste (don't be greedy like me) then covered with damp towel for another 60 minutes proofing before bake in a 200'C about 20 minutes.
Original sponge dough recipe from the book:
350g bread flour
6g instant dry yeast
18g sugar7g salt
7g milk powder
230g slightly warm water
** I added 1 tablespoon green tea powder