Somewhat surprisingly the first one worked - contrary to the general rule that the first thing, often a pancake, fails.
The flower mould seemed to work just fine, and each time I put the mould into the oil it bubbled beautifully.
Then I tried to use the circle mould, which did not work as well.
I dipped the mould into the batter and it cooked almost straight away, and peeled straight off.
I still ended up with a pile of rosette cookies, and had a great time making them. The kitchen didn't end up that messy either!
Want to make your own? Recipe can be found here, and you will need the moulds and a sugar thermometer.