Does wine need a hechsher?

Answer: Yes (cRc).

Reason: Wine, including fruit wine, needs certification.

Source:

• cRc: wine (including fruit wine) requires certification; wine served at cRc-certified events must be mevushal.

Related questions:

• Can I drink non-mevushal wine? Yes.
• Does grape juice need a hechsher? Yes (cRc).
• Is sherry-cask whiskey kosher? It is a big question among the poskim.

References: cRc (askcrc.org), “Wine (Liquor Category)”