Four days and four roll cakes. I haven't made these in awhile and as you can see, they still need some work.. Nevertheless, they were still very tasty!
From top-left corner going clockwise: Coffee, Greentea/red bean, chestnut and hazelnut. All the cream fillings were creme mousseline based with flavour added into it. This cream really complemented the nuts and coffee flavours well. It had a texture between a mousse and a buttercream. and holds its shape pretty well.
Alright, let's get down to business!
I would definitely prep the filling first unless you're just going to be using whipped cream (but even then, have your whipping cream weighed in the bowl that you're going to whip it in and chill it in the fridge before starting on the cake). The filling I used need a little more work, so you will need to prep it at least a few hours before hand.
The rolling definitely need some practice and there are tons of video online that does a good job of demonstrating just that. I will definitely try to show with some snap shots next time! Let me know how it goes for you, or drop me a message if you have any problems along the way!