Vallarai keerai (Centella Asiatica) is an amazing herb used here to improve the memory for children who are preparing for competitive exams and also for old people with decreased memory. It is always better to include such fresh herbs into our diet rather than taking them in capsule form. I also found that when we served a chutney using vallarai keerai to my father everyday, there was a significant improvement in his memory. So we can take vallarai thuvaiyal to improve our memory power naturally. It can be used as a spread for breads, dosa, or wraps and it can also be used as a side for idli, dosa, or any rice varieties.