Why Powdered Sugar Isn't Always An Ideal Sweetener For Warm Beverages - Tasting Table
Granulated sugar doesn't dissolve well in cold drinks, leaving a sweet puddle at the bottom. Using powdered sugar can add graininess due to cornstarch.
The Floral Liquor You Should Never Add To Hot Drinks (And Why) - Tasting Table
Gin's unique botanical complexity can become overwhelming in hot drinks. Plus, hot temperatures can lower alcohol's potency, meaning gin's aromatic elements and ABV don't shine in heated cocktails.