

I make vinaigrette with sesame oil from time to time and never had a problem. Maybe it depends on people, digestion can be different from one person to another. (I dedicate this comment to my poor grandma who can’t digest half of fruits and vegetables properly.)
At home, I always heat the water in a saucepan on my stove. I only use a microwave when I’m making tea at the university, where it’s the only way I can get hot water. These microwaves are always a bit dirty because most students don’t clean after themselves, and I can’t fully enjoy my tea because it feels tainted.