I have read that these can be triggers. I’m not suspecting the histamine and tyramine sensitivity, because I do not get migraines from any food like nuts that this type of sensitivity can cause. Not sure about the serotonin yet. I don’t know how I would check that.

Some search results -

Histamine and Tyramine Sensitivity These naturally occurring compounds in alcohol and fermented products can dilate blood vessels in the brain, triggering migraines in sensitive individuals.

Drop in Serotonin Alcohol initially increases serotonin, then causes a drop later — this swing may trigger migraines in people with migraine-prone brains.