In my May 1991 Word Ways article on composing palindromes, I discussed how to make palindromes by starting with a central core and moving outward. Thus, the mini-palindrome NOT ON can be expanded into STRESSED? NOW ON DESSERTS! because the balance between stressed and desserts (stressed in reverse) maintains the palindrome's equilibrium.
"Sex, American Cities and Palindromes,"
Word Ways: Vol. 24
, Article 3.
Available at: http://digitalcommons.butler.edu/wordways/vol24/iss4/3