Yes, giving up enjoyable food can be a good tapa in Jain Dharma, if it is done with right intention and self-restraint.

In Jainism, tapa is meant to reduce attachment to taste, comfort, and the body. So renouncing tasty or favorite foods can help practice:

• Aparigraha — non-attachment
• Sanyam — self-control
• Kshama and tapasya — purification through discipline

But the spirit is important:

• It should be done without pride
• It should not harm the body unnecessarily
• It should be done with peace, awareness, and devotion
• The goal is inner purification, not just external hardship

So, if one gives up enjoyable food to weaken attachment and strengthen the soul’s discipline, it is considered a meaningful tapa in Jainism.