[rolling his eyes slightly.]

I can teach that as well, though it's only necessary if you expect some of the rarer and more difficult to detect poisons to be used.

The easiest way to prevent something like this happening again though is to prepare your own meals from scratch. Anything with an ingredients list that consists mostly of chemicals is going to be much more at risk.

You might get called a picky eater but at least you won't be dead. [something damian knew from personal experience.]