It ain't ranch, blue cheese or honey mustard ... no, the best sauce in the world, according to New York Jets top pick Ahmad "Sauce" Gardner, is BBQ!!!

Gardner dubbed the sweet, tangy dip #1 to TMZ Sports shortly after he was selected with the fourth overall pick in Thursday night's NFL draft ... but he insisted that he does like "all" of the sauces.

When it comes to the heat category ... Ahmad tells us he loves hot sauces, too -- and watch the clip, he revealed his favorite one to us as well.