While theoretically you can get certified food-safe blend of PLA, the rest of the extrusion path must also be food-safe... I personally am not fond of eating hot degraded PTFE... Or the trace remains of charred ASA/ABS I printed last week through the same nozzle... Or in fact any of the various coatings of the heated bed or leftover trace amounts of previous prints...
It's just a black hole that I choose not to get into by not printing stuff that's expected to be in contact with food.
It's just a black hole that I choose not to get into by not printing stuff that's expected to be in contact with food.