This is Episode 2 of Dr Charulatha Mani's "Raga in a Minute" Series. The signature motifs (prayogas) of Raga Saramati are here established in a nutshell.
To learn more about this raga read Charulatha's "A Raga's Journey" on Saramati:
http://charulathamani.blogspot.com/2014/03/a-rare-treat-raga-saramati.html
Other Raga in a Minute videos:
Kambhoji: https://youtu.be/csDzxmGG6YI