poppy seed

US /ˈpɑː.pi ˌsiːd/
UK /ˈpɑː.pi ˌsiːd/
"poppy seed" picture
1.

a very small black or bluish-black seed, used in baking and as a source of oil

:
The bagel was covered with poppy seeds.
She baked a lemon and poppy seed cake.