Color and texture, maybe yes. Taste some straight, see if you get any unique flavor worth working with?
SL
Grind them into paste to get flavour, other then that , great in Bread
Might want to make a spicy salad dressing. Lemon, poppy, peppers. I like my hot sauces smoother. Even the random seed bothers me.
That's a good idea with the Nigella seeds! They have a really good taste to them.I use poppy seeds in making currypowder, so if you're in for making some Bengal style sauce they should come in handy.
Must say that if i don't use them in my curry mix the taste does not alter much...
If you are looking for a crunch and big taste in your sauce i would recommend Nigella seeds (black cumin)
I use them a lot whole in Indian food but they also blend in very well in Mexican cuisine.