Chino da swab kar dey wokoo, mananaa

Honey and raisins are also good, my mullah said this is what many mullahs used to memorize hadith.

Yep!
Actors are known to be among the people with the best memory because of having to memorize their lines. Memorizing poetry, phone numbers, dates, people's names (e.g., kings, presidents, etc.), verses or chapters from Sacred Scriptures (Bible, Quran, Vedas, etc.) certainly help a lot.

I particularly like the idea of memorizing your grocery list, lol. Gosh, isn't that a pity :p

And how many of us today know the phone numbers of our best friends or family members, what with their being saved in our phones and all? lol.

Cod liver oil is particularly good for the brains health and helps memory..gingko biloba is actually pretty good, i had blood circulation problems a couple of months back and i always had cold feet n hands but i started taking this and alhumdulillah there was a considerable improvement.