I have regularly asked this of people to which there have been one of two responses. They usually sum up the practitioners approach.

No idea...
Or
An exact, step by step recount...

Knowing full well my memory will likely fail me in the future, I thought it prudent to log if here on Beltchecker.

The first thing was how to roll a person in Turtle to set up a Darce. (A small diversion to show that the Anaconda is also an option).
This lead to showing, what we refer to as, a Reverse-Head-&-Arm choke. (Think arm in Guillotine with their arm across your body).
These were all from questions but next were what I chose to teach... My first loves.
The Bow-&-Arrow choke followed by a variation that I refer to as a Crossbow.

My first technique I executed during a roll was a non-specific stackish pass... More principles than a nameable thing.
After that... My unicorn.
The myth that was... The North/South Choke. This tricky little bitch has illuded me for nearly a decade and I've only just recently had any success. (I was happy dancing on the inside).
Then a Bow-&-Arrow for good measure followed by a Kimura trap set up to Crucifix with a RNC.

And that's it... Session one as a Black Belt documented forever on Beltchecker.

What was yours?