Mustard seeds are kitniyot so Ashkenazi Jews aren't supposed to eat mustard. Some Sephardi and Mizrachi groups will eat mustard though.
It depends on the brand. However, even brands of real mustard that are certified kosher for Passover are still kitniyot.
Only if it's certified kosher for Passover.
It means that you can't eat them during Passover.
Passover is not a time of fasting, so Jewish people can eat during the middle of the day during Passover.
Christians can eat whatever they wish during the 8 day holiday of Passover. Although Passover is a Jewish holiday, Christians also acknowledge it.
Lamb can be kosher for Passover. However, Ashkenazi Jews traditionally do not eat lamb during Passover.
I was told that soy contained wheat, and wheat has to be unleavened for Passover.
I believe so
Triskits are made from wheat, so, no, you cannot eat them.
Yes, you can eat steak during Passover, provided that the meat is kosher and prepared according to Passover dietary laws. Many people enjoy meat dishes during the holiday, as long as they avoid leavened products and any ingredients that are not compliant with Passover restrictions. It's important to ensure that any seasonings or marinades used are also kosher for Passover.
Matzo, which is unleavened bread.
Generally, most scones are not allowed to be eaten during Passover because they are typically made with regular flour or cake flour. However, if the scones were especially baked with only Kosher for Passover ingredients (like matzoh cake flour or coconut flour), a Jew may eat those scones during Passover.