Die Kartoffel schmeckt gut.

The potato tastes good.

Breakdown of Die Kartoffel schmeckt gut.

• gut: good
• schmecken: to taste
• die Kartoffel: the potato

Questions & Answers about Die Kartoffel schmeckt gut.

Why is die used for Kartoffel, and how can I tell it's the subject in the nominative case?

die is the feminine singular article in German for both nominative (subject) and accusative (direct object) cases. You know die Kartoffel is the subject because it appears before the verb schmeckt. In a German main clause, the finite verb occupies the second position (V2 rule), so the element in first position is normally the subject in the nominative case.

Why is Kartoffel capitalized?

In German every noun—common or proper—is capitalized. That’s why Kartoffel begins with a capital K, even in the middle of a sentence.

Why is the verb schmeckt in third-person singular, and why is it placed right after the subject?

Because die Kartoffel is a third-person singular noun, you conjugate schmecken as schmeckt (ich schmecke, du schmeckst, er/sie/es schmeckt…). German main clauses follow the verb–second (V2) word order: the finite verb comes in position two, immediately after whatever is in position one (here, the subject die Kartoffel).

Why isn’t gut inflected as gute, even though Kartoffel is feminine?

Here gut functions as a predicative adjective (essentially acting like an adverb) modifying the verb schmeckt. Predicative adjectives in German remain in their base form without endings. If you place an adjective directly before a noun (attributive adjective), it must take an ending—for example, die gute Kartoffel (the good potato).

How would I say this sentence in the plural, as in “The potatoes taste good”?

Change Kartoffel to its plural Kartoffeln, and adjust the verb to third-person plural:
Die Kartoffeln schmecken gut.
Note that the plural nominative article is still die, the verb becomes schmecken, and gut remains uninflected.

How can I express that I like the potato, rather than just saying it tastes good?

Use the dative construction with schmecken to indicate who experiences the taste:
Mir schmeckt die Kartoffel.
L iterally “To me the potato tastes.”
Alternatively, you can use mögen:
Ich mag die Kartoffel. (“I like the potato.”)

How do I intensify gut to say “really good” or “very good”?

Place an adverb like sehr (very) or wirklich (really) before gut:
Die Kartoffel schmeckt sehr gut.
Die Kartoffel schmeckt wirklich gut.

Can I replace gut with other adjectives, and will they change form?

Yes. For example:
Die Kartoffel schmeckt lecker.
Die Kartoffel schmeckt hervorragend.
Since these function as predicative adjectives (or adverbs), they remain in their base form without any endings.