Question:
If I eat half a kzayis of mezonos and a whole kzayis of shehakol, and then I make a borei nefashos on everything, and then I eat another half a kzayis of mezonos, should I then make an al hamichya?
Thank you.
Answer:
If you made it on everything, then you have to eat a full kzayis in order to say al hamichya.
Best wishes