Seeing that I've been having more of these petits four lately, I decided to give them another shot. I had used the french method last time and had some trouble with the batter that had ended up far too liquidy to pipe out. This time, I chose to use the italian method which was said to be easier to work with for beginners.
I followed the detailed instructions and tips on Mélanger (the italian method follows the french) and found the batter much easier to pipe out! They didn't turn out flat like with the french method! Nice!
However, there are some things I would do differently next time. I would double my pans when baking because my first batch burnt slightly. I would fold the batter a bit more after adding the egg white + almond mixture to the meringue to get rid of all the lumps. Also I couldn't find egg white powder anywhere, so I had to omit it. I wonder what that would change...
The recipe for these blueberry macarons can be found on Mélanger's blog! I suggest to let the filling in the fridge for a couple of hours so it can be really thick when filling the macarons. Absolutely delicious!