Learn Italian: Vuoi il miele nel latte caldo? - Do you want honey in the hot milk?

In English, we usually drop the word "the" when talking about general substances or mass nouns like honey. Italian almost always keeps the definite article, so you say il miele.

How do we get the word nel for "in the"?

When the preposition in (in) sits directly next to the definite article il (the), they merge together to form the single word nel.

Since latte ends in -e, how do we know its gender?

Italian nouns ending in -e can be either masculine or feminine, so you have to memorize which one they are. In this sentence, you can easily spot that latte is masculine because it uses the masculine article inside nel and the masculine adjective caldo.

Wait, doesn't caldo mean "cold"?

It sounds like it, but it is a famous false friend for English speakers! Caldo actually means hot or warm. If you want cold milk, you would ask for latte freddo.