A bartender’s opinion & what you actually need.
Cocktails taste best out of your favourite glassware. If you are at Church or in court that may be a flask. If you are on the bus in the morning that may be a thermos. At home we like crystal and copper.
Whatever the situation, we think cocktails (bar few) are best when very cold. That being said, it is always a smart idea to keep a couple of your favourite glasses tucked away in the freezer. No point going to great efforts to stir the best Martini in Melbourne to pour it into a glass straight from the dishwasher.