Wine vinegar is always forbidden without a rabbinical supervision.
The following are allowed:
- Mazzetti Mazzetti d´Altavilla: Balsamic vinegard of Modena – Rav Garellik – Orthodox Union (OU)
- Fattorie Giacobazzi: Balsamic vinegard of Modena – Rav Y. Belinow – OU
- Sharon Valley: Vinaigre Balsamique (Kasher le-Pesach)
- Clearspring; brown rice vinegard -OU