Beer Braised Meatballs and Easy Sauerkraut Served with Mustard Sauce

Name: Beer Braised Meatballs and Easy Sauerkraut Served with Mustard Sauce
Ingredients: For the Meatballs (makes 16 about 1 1/2- ounces meatballs); • 2 slices white stale bread, crust removed; • 3/4 cup good quality lager beer, divided; • 3 tablespoons olive oil, divided; • 1/2 large onion, finely chopped; • 2 garlic cloves, finely chopped; • 1 1/2 teaspoons kosher salt; • 1 pound beef chuck, cut in bite-size cubes; • 1 pound veal or pork, cut in bite-size cubes; • 2 large egg yolks; • 1/2 teaspoon black pepper; • 1/2 teaspoon dried coriander + 1 teaspoon mustard seeds, toasted and grinded together; For the Mustard Sauce and Easy Sauerkraut; Mustard Sauce:; • 3 tablespoons mayonnaise; • 2 tablespoons Spicy Brown or Dijon mustard; • 1 tablespoon honey or to your taste; • 2 tablespoons lager beer; • Pinch salt; For the Easy Sauerkraut:; • 2 tablespoons olive oil; • 1/2 of onion, thinly sliced; • 1 medium carrot, shredded; • 1 tablespoon mustard seeds, toasted; • 1 packed tablespoon brown sugar; • About 3/4 to 1 cup thinly sliced mushrooms of your choice (optional); • 1 small head (about 10 oz) green cabbage, shredded; • 1 teaspoon Kosher salt; • 1/2 cup beer; • 1/3 cup cider vinegar