Learn Italian: L'aglio è piccolo, ma molto forte. - Garlic is small, but very strong.

In English, we usually drop the article when making general statements, like "Garlic is small." In Italian, however, you almost always need the definite article when talking about a noun as a broad category or general concept. So, it translates literally as "The garlic is..."

Why does forte end in -e if it describes the masculine word aglio?

While many adjectives end in -o for masculine words (like piccolo), Italian has a second group of adjectives that end in -e in the singular. Adjectives like forte (strong) or intelligente (smart) use the -e ending for both masculine and feminine nouns. They only change to an -i ending in the plural.

If we changed aglio to a feminine word like cipolla (onion), would molto become molta?

No, it would stay molto. Here, molto is an adverb meaning "very" because it describes the adjective forte. Adverbs never change their endings. Molto only changes to molta, molti, or molte when it means "a lot of" and describes a noun directly.