alternatives to sesame seeds

[mamado]

dd1, has just got into seeds, sesame in particular and loves houmous. However dd2 has just been diagnosed as being allergic to sesame - is there a safe and good alternative to sesame to use in cooking?

Poppy seeds taste quite similar (but look odd). You can make houmous without tahini you know? Have a google, for US sites, they never use tahini in it.