What is this "yummy" gesture all about?

Wherin someone, a chef, or a gourmand maybe, makes a sign by placing finger and thumb tips together next to smoochy lips to indicate that something is delicious?
Peace,
mangeorge

WAG: it mimics the act of placing something in your mouth?

According to this article:

Thanks, makes sense. Throwing a kiss for the food.
Interesting article, too.