Semen Thlaspi has black mustard with can turn into mustard oil by enzyme, mustard oil has effect of sterilization and banting.

此外菥蓂子中的黑芥子甙，经酶作用可产生芥子油，具有杀菌和减肥的作用。

youdao

Different kinds of mustard give different mustard oils: black mustard gives a highly pungent mustard oil due to its content of sinigrin.

不同种类的芥末提炼出不同的芥末油。因含有黑芥子硫苷酸钾，黑芥末提炼出的芥末油气味非常浓烈。

youdao

Then I cut two slices, brushed them with olive oil and added Black Forest ham, a bit of mustard and butterkase cheese before grilling the sandwich.

NPR: The Art Of Sandwich-Making