Hi there!
I'm a complete newby with a Solingen strop and strop paste - not knowing if I should use the paste at all!

So, I got this nice SOlingen strop with ONE very SMOOTH CREAM LEATHER SIDE and the OTHER a not-too-fuzzy SUEDED SIDE, and together with it a small red box "Stranden-Pasta" (apparently DOVO sells it) with two even smaller pastes inside wrapped in blue and red paper.
The blue wrap has a BLACK paste. The red, a kind of brownish-red paste. Both smooth to touch.

On the internet I found that the black is extra-fine and the red is fine.

SO QUESTION: which one to use??

And on which side of the strop - sueded or regular side?

SHould I use both - one on each side? Or keep one of the sides clean?

Thanks !!