So, what's the magic number? The ideal temperature for hot chocolate is between 140°F and 160°F (60°C to 71°C). Any higher, and you'll be crying like a baby who's lost their pacifier. But don't worry, if you don't have a thermometer, you can still make a decent cup of hot chocolate by heating the milk until it starts to simmer.
Now, here's a fun fact: in the 18th century, hot chocolate was a luxury item only the rich could afford. It was like the iPhone of beverages back then. The wealthy would serve it at fancy parties, while the poor had to settle for... well, let's just say, not-so-fancy parties.
But, beware, my friends, for overheating milk can lead to a disaster of biblical proportions. It's like trying to make a cake without flour – it just won't work. The milk will scald, and you'll be left with a hot chocolate that's as appealing as a timeshare presentation.