In Jainism, whether you can drink ginger tea depends on your tradition and personal vows.

• Root-vegetable guidance: Many Jains avoid root vegetables (like ginger, onions, garlic, potatoes) because uprooting plants is seen as harming life. Under this view, ginger tea would not be recommended.
• Tradition differences: Digambar and Śvetāmbar traditions may have different practical rulings, but the common Jain emphasis on ahimsa leads many followers to refrain from using root vegetables in meals.
• Practical note: Some individuals who are more flexible or who are not observing strict vows during certain occasions might consume small amounts, but this is not the standard practice for devout Jains aiming for a strictly sattvic, non-violent diet.

If you’re following a specific Jain path (Digambar or Śvetāmbar) or have a particular vow, it’s best to consult your local Jain teacher or community for your exact guidance.