In Jainism, the "Panch Tap" (पंच तप) refers to the five types of austerities or penances (tapas) practiced by ascetics and devout laypersons to purify the soul and progress on the path of liberation. These five main types of external austerities (Bahiranga Tapas) are:

1. Anashana (Fasting) – Voluntarily abstaining from food for a certain period to purify the mind and body.
2. Avamodarya (Eating less than one’s hunger) – Consuming less food than one's appetite to cultivate self-control.
3. Vritti Parisankhyana (Restricting food items) – Limiting oneself to certain types of food or number of food items.
4. Rasa Parityaga (Renunciation of tasty/delicious food) – Giving up stimulating or pleasurable foods, such as spices, sweets, etc.
5. Vivikta-shayyasan (Solitude in sitting and sleeping) – Choosing solitary and simple places for sitting and sleeping to avoid attachment and distractions.

These austerities are part of the broader Jain discipline to overcome passions (kashayas) and progress toward spiritual liberation (moksha).