The back basic is the foundation piece of British salsa. Eventually the back step provides the wind-up for the anti-clockwise spin that is the trademark of the British turn combinations.

Verbal Cue:
Back-And-Close-Clap

Prepare to start:
Stand with your weight on your right leg ready to move with your left.

Beat:

1.	Take a step back with your left leg, while your right foot stays in the same place. (Remember to transfer your weight completely onto your left leg)
2.	Transfer your weight from your left leg onto your right leg. This is called a replace of weight, and is done to the verbal cue of "and".
3.	Place your left foot close to your right and transfer your weight onto it.
4.	Clap your hands once to mark the null beat.

Your weight should now be on your left leg ready to move with your right.

Repeating the process moving to the right,

Beat:

5.	Take a step back with your right leg, while your left foot stays in the same place. (Remember to transfer your weight completely onto your right leg)
6.	Transfer your weight from your right leg onto your left leg. (Replace of weight done to the cue of "and")
7.	Place your right foot close to your left and transfer your weight onto it.
8.	Clap your hands once to mark the null beat.

You are now back to the beginning with your weight on your right leg, ready to move with your left.

Comments:
If you want to practise this basic facing Shirin in the clip: Back Basic, Dual Angle; you should start with your weight on your left leg ready to move with your right.