Dites-moi, s'il vous plaît, qu'est-ce que c'est un "sauce de chien".

I tried Google and found that it was a spicy sauce from the French West Indies, used to give flavor to foods.

It isn’t something I’d heard of before. I was thinking “I’m hearing chien - it *can’t* be chien” ;) https://www.pitonbungalows.com/en/recipe-for-the-famous-sauce-chien/

The above link didn't get me to a receipe. Try this one:  https://www.thefrenchcookingacademy.com/recipes/sauce-chien