Complex sentence: In some restaurants, a thali may include "bottomless" refills on all components of food, the idea is that one eats until fully satisfied; such thalis are referred to as "unlimited" thalis.
Split into simpler sentences: In some restaurants, a thali may include "bottomless" refills on all components of food; the idea is that one eats until fully satisfied. Such thalis are referred to as "unlimited" thalis.