Can you use PLA material with food and drinks?
As others have pointed out, PLA isn't specifically not food safe, but materials that have been printed previously can contaminate the PLA.
Additionally, anything 3D printed is extremely porous. Once a part is used for food, moisture and bacteria will accumulate in the pores, and can never be completely cleaned out, contaminating any food that contacts it. It can't be sterilized either, because the temperatures needed for sterilization would deform or melt the plastic.
I've also heard that while PLA and ABS might be fine, the pigment inside them used to give them some color might be dangerous, because you never know, what it is.