How exactly do I do a barrel roll?

In Race the Sun, you gain levels by completing certain goals. One such goal is "Do a barrel roll 20 times in 1 run."

This is proving quite frustrating for me, as I don't actually know how to consistently do a barrel roll. I've seen it happen once or twice, but don't really know what I'm doing.

How do I do a barrel roll?

Solution 1:

Ah-ha! I figured it out!

To perform a barrel roll, you must steer your ship in any one direction until you see blue sparkles at the end of your wing. Like this:

Once you see those sparkles, quickly steer in the opposite directions. You will perform a barrel roll!

^{I crashed right into that wall when I took this screenshot.}