Very often, in addition to one's regular rasa, there is found the presence of some other rasa, and the mixture of these loving humors is sometimes compatible, or palatable, and sometimes incompatible, or unpalatable. The following is a scientific analysis of the compatibility and incompatibility of the mixtures of these various rasas, or loving moods.
When in the rasa of neutral love (śānta-rasa) there are found traces of ghastliness or astonishment, the result is compatible. When with this neutral love there are manifestations of conjugal love, chivalry, anger or dread, the result is incompatible.
When in the ecstasy of a serving humor there are manifestations of dread, neutral love or chivalry (such as dharma-vīra and dāna-vīra), the result is compatible. The ecstasy of devotional service in chivalry (yuddha-vīra) and anger are directly produced by Kṛṣṇa Himself.