Preheat oven to 375-degrees F (190 degrees Celsius).
Place the bratwurst in a single layer in a large skillet. Set aside.
In a large bowl, whisk together the beer, horseradish, garlic, allspice, caraway seed, dill weed, black pepper, and dill pickle relish.
Pour the beer mixture over the bratwurst in the skillet.
Cover the skillet, leaving a small vent hole.
Place the skillet in the oven for 40 minutes.
Remove the sausages from the skillet and serve on sausage buns (if desired), or serve over hot cooked noodles or mashed potatoes.
Notes
Store any leftovers in an airtight container in the refrigerator for up to 5 days.May be frozen. Store in an airtight freezer container or freezer bag. Label and date. Freeze for up to 3 months. Thaw in the refrigerator overnight.