I have a question about the recipe "Matcha Snickerdoodles" from Ali Slagle. Can I roll these in the matcha sugar BEFORE baking?
Yes! Most cookie dough can be rolled in sugar before baking. But it's better to do this RIGHT before baking, as dough that is pre-sugared, and then put in the fridge, will melt and tends to become a sticky mess.
I tried a batch (the first batch) by rolling PRE bake and it actually didn't work! All of the sugar and matcha kind of melted and dissolved into the cookies. It stuck much better when I very, very gently used my hands to sprinkle and rub the sugar over the still-warm cookies. I wonder if it's because this recipe has a very high fat content in the dough? Mysterious!
Sugar melts at 320 degrees Fahrenheit and starts to caramelize around 340.
That explains why doughnuts are glazed or sprinkled with sugar *AFTER* frying. Also, the dusting of powdered sugar on countless desserts.
Chemistry prevents you from doing this, not some arcane mystery.
Right, thank you. Still, rolling the cookies after doesn't seem like the standard snickerdoodle practice, so I'm wondering where the difference lies. For example: https://food52.com/recipes... and this Betty Crocker recipe: http://www.bettycrocker.com/recipes/snickerdoodles/7ffc92a9-d847-4869-9ecb-99de3b751b14
I always roll my snickerdoodles in cinnamon sugar before baking at 400 degrees, that's how they form the lovely cracks on top that we expect to see. It also forms a sugary crust around the edges and the bottom. I'm thinking it's the matcha.
I think you must be right!
Here's the original recipe that has you gently toss the warm cookies in the sugar mixture after baking.