It is the Guittard Chocolate factory which is a couple of blocks away. They do the roasting, grinding and other processes in the factory. read more
2) See's does not make their own chocolate. They buy it from others and only melt it. 3) When driving North on Rollin's road, the smell clearly comes from the left side, not the side that See's is on. 4) The smell is of roasting chocolate. See's does not roast chocolate. Guittard does. 5) You can tell a lot about a factory by the roof. read more
It's sketchy during the night and abandoned during the day ( like any of the stations on the Bart line ), but sadly there really isn't anything to do nearby. I grew up in Millbrae and while there's an In-n-out nearby if you're adventurous, don't stray too far before missing your train. read more