You can easily make these Til Ke Laddu with both hulled or unhulled white sesame seeds. Hulled sesame seeds have their outer hulls or husks removed and are white, cream or off-white in color. Unhulled sesame seeds do not have their hulls removed. So, they have a tan or light brown or brown color and are somewhat bitter in taste. Using unhulled sesame seeds is fine when making any ladoo, as we use a sweetener (jaggery, in this recipe). So, you do not feel the bitterness while eating as it is overpowered by the sweetener. I always make any variety of Sesame Laddu with unhulled sesame seeds, as I find they taste way better than the ones made with hulled or polished white sesame seeds.