A video of three rocket motor tests at the FAR (Friends of Amateur Rocketry) site in Mojave, California:

 

From the caption:

The first was a successful M-class 6-grain APCP 75mm motor by Eric Beckner. The second is a successful K-class 2-grain 89mm sugar motor by Rick Maschek for the Sugar Shot to Space program using sorbitol as the fuel and does not have a core, it burns on two exterior flat sides of the grains. The third and final test is a 6-grain 4.5″ (115mm) sugar motor using dextrose as the fuel by Randy Dorman and his son Theo. Unfortunately, the motor over-pressurized and CATOed at start up.