Ojas is the Essence of Happiness
The sweet nectar you ask about is called Ojas. The word Ojas ओजस् literally translates to splendor, vitality, power, luster, appearance, and bodily strength.
You can think of Ojas as the container that holds your happiness. It is the purest essence of Kapha Dosha. In the physical body it is related to the reproductive, hormonal, and cerebrospinal fluids.