In Jainism, there are six rasas (tastes): Madhur (sweet), Amla (sour), Lavana (salty), Tikta (bitter), Katu (pungent), and Kashaya (astringent). Madhur is the sweet taste.

There is no special “seasonal” rule about a unique sweet taste for summer in the Jain scriptures. What matters is moderation and the aim of reducing attachment and purushartha (spiritual effort). Sweet taste, like other rasas, can lead to attachment if indulged, so the wise use it in balance and with mindfulness, especially when one is practicing fasting or austerities.

If you meant something else by “Sweet Kal” (for example a specific chant, rule, or festival name), please tell me more details so I can answer precisely.