In Jainism, "aambil" refers to a specific type of meal that is very simple and generally consists of boiled grains and pulses without any milk, curd, ghee, oil, or sweets. It is often observed as a form of austerity (tapa or tapaścharya).

The word "tap" in Jainism refers to penance or austerity. There are many types of tapa, such as fasting (upvaas), eating once a day (ekasana), or taking only simple food (aambil).

1 aambil is commonly considered equal to 1 tap in the context of Jain penance. If someone observes a day of aambil, it is counted as having completed 1 tapa (penance). However, the exact equivalence can vary based on local traditions or the specific context of spiritual practice.

So, 1 aambil = 1 tap according to standard Jain practice.