Yom Kippur is one of the holiest and somber of the Jewish holidays. It's broken with a fast. This could be meager or filling depending on how you want to go.
There are actually two meals associated with the holy day. One is the pre-fast meal known as seudah ha-mafesket - literall meal of separation or concluding meal. This is usually rice or kreplach or stuffed dumplings along with challah dipped in honey(this occurs ten day after Rosh Hashanah where Jews have to eat something sweet for a sweet New Year), chicken or fish. meals have to be made with a minimum of salt as this could cause dehydration while fasting.Plenty of water must be taken as well. The break-fast meal consists of hi-carb dairy meals , including some brunch recipes. Sweet kugel or noodle pudding is made as well as egg rich quiches and souffles. Some go the meager route with just bagels. Some go the lusher route by breaking the fast with homemade soup and brisket. The meal could end with a home baked cake. What is eaten depends on if the family has Sephardic or Mediterranean or Ashkenazi or Eastern European roots. The Sephardim usually have a light bread or snack followed by a heavier meat meal.
Sephardic Jews have always been influenced by the places where they've lived. Many make baklava, usually associated with the Greeks and Turkish for their fast break. Turkish Jews break the fast with a teapsoon of quince jam and followed with a sip of water. They greet guests with pepitada or subiya, a milky drink made from the seeds of Persian, cantaloupe or honeydew melons. The seeds are dried toasted cracked open and then submerged in cold water for twenty-four hours..It's then chilled and served with a drop of sugar or rosewater. They also incorporate the famed Greek lemon and egg chicken soup, avgolemono. Ashkenazi Jews usually break the fast with more brunch dishes. There are quiches filled with much needed protein and can be filled with broccoli and mushrooms. There's also Brie with infused honey and crusty bread. It's a nice blend of sweet and savory. of course lox and bagels are the old stand by.Add a schmear of cream cheese if it's allowed by dietary law. Bagles are a great way of introducing food into the system.
Yom Kippur is the most holiest of all the Jewish holidays. The fast should be taken just as seriously. Fill up on good , nutritious foods that help with introducing foods.