"This is the garlic."

Translation: C'est l'ail.

[hoctr]

ce c'est l'ai?

[Sitesurf]

you don't need 2 demonstrative pronouns here, one is enough:

• c'est l'ail
• cet ail est bon (masculine demonstrative adjective, with a "t" before a noun starting with a vowel or a non-aspired H: cet homme)

[hoctr]

Thank you.
So is there a difference in french between, "this is garlic" and "this is 'the' garlic"?