Turkish coffee
I've had episodic cluster headaches for 18 years and I'm currently about 6–7 weeks into a cycle.
My attacks usually start with a strange pain that seems to originate on the right side of my neck and then travel upward toward my eye. As the attack intensifies, the pain eventually becomes completely localized behind my eye. That's when I know I've reached the peak. The pain turns into an intense burning sensation, and both my eye and nose start running heavily.
I typically get between 1 and 4 attacks per night. One thing I've noticed is that my nose often makes a popping sensation just as the attack is beginning to subside.
I've also discovered something interesting. If I drink Turkish coffee about 3–4 hours before going to bed, I often don't get any attacks during the night. If an attack does start, I immediately drink a cup of Turkish coffee, and after a while the attack goes away.
I also use Red Bull, which helps when an attack is already starting, but drinking Red Bull a few hours before bedtime has never prevented attacks for me the way Turkish coffee seems to. Can add that I've test every type of coffee you can think of but the Turkish one seems to be the one to use.