Channa Chhena or sana are curds or cheese curds, originating from the Indian subcontinent. Chhana is an acid coagulated product obtained from milk. Paneer Paneer is a heat-acid coagulated milk product obtained by coagulating standardized milk with the permitted acids at specified temperature Chemical Composition The chemical composition of chhena depends mainly on the initial composition of milk, the conditions of coagulation, the technique of straining( which determines the moisture content), and loses of milk solids in the whey.