I keep mine in the drinks cupboard, out of sunlight. I don't have it all the time, but it seems to be fine each time I have it. I have bought Aperol at times over many years and it doesn't seem to deteriorate. Hope you enjoy it.
Hi, the last bottle we had lasted 6-8 weeks & it was fine. I would expect it to be ok for 3 months without deterioration as long as you keep it out of direct sunlight & at a relatively constant temperature. I hope that helps? Thanks Dave