Silence of Smoke

Tells the story of a family that has been dedicated to making cakes for eight generations. It centers on a secret ingredient in the cake that the father doesn’t reveal to his son, even when he passes his business to him, on his deathbed.
(Source: hollywoodreporter.com)
~~ Adapted from the short story "Wo Ba Mei Shuo De Na Jian Shi" (我爸没说的那件事) by Xin You (辛酉).