A viewer, who may not be a professional cook, provided this recipe. The FN chefs have not tested this recipe and therefore, we cannot make representation as to the results.
or
This recipe was provided by professional chefs and has been scaled down from a bulk recipe provided by a restaurant. The FN chefs have not tested this recipe, in the proportions indicated, and therefore, we cannot make any representation as to the results.
But…then…er…have they tested..? no, wait…hmmm
They may have tested the recipe, in proportions other than those indicated…