In traditional Jain practice, drinking tea is generally discouraged, not encouraged.

Very simply:

• Jain monks and nuns: Do not drink tea (or coffee, alcohol, etc.). Their rules are strict – no stimulants, no addictions, maximum ahimsa and self-control. ( jainknowledge.com)
• Serious/orthodox Jain householders: Many also avoid tea for these reasons:

- Tea has caffeine, a stimulant that can disturb calmness and increase attachment (habit/addiction). ( jainknowledge.com) - In Jain thinking, we try to reduce hiṁsā (violence) to tiny living beings; tea leaves and standing liquids can involve more microscopic life. ( jainknowledge.com)

• Today, in practice:

- Some Jains still drink tea daily – this is a lenient, modern practice of laypeople. - Many others are trying to reduce or give up tea, at least during Paryushan/Das Lakshan, fasts, or special vows, as part of extra discipline. ( jainknowledge.com)

So:

• “Did Jain people drink tea?”

- Ideal Jain conduct (especially for monks/nuns and strict laypeople): No, they avoid tea. - Many ordinary Jains today: Some do drink tea, but it is not considered spiritually ideal, and many teachers advise gradually leaving it.

You can read more here and here .