Created by lazyme on March 14, 2015
Step 1: Heat oil in large saute pan over medium heat. Add onions, sugar and salt.
Step 2: Cover and cook until onions are wilted and very juicy, but not browned, stirring occasionally, about 30 minutes.
Step 3: Add chili powder, garlic and red pepper flakes; saute 4 minutes.
Step 4: Stir in barbecue sauce, beer, molasses, mustard, vinegar and soy sauce.
Step 5: Simmer uncovered until mixture thickens slightly, stirring occasionally, about 10 minutes. Cool to room temperature.
Step 6: Cover tightly and refrigerate at least 24 hours for flavors to develop.
Step 7: DO-AHEAD TIP: Relish can be prepared up to 1 week ahead. Keep refrigerated.
Step 8: Prepare barbecue (medium heat) and position rack about 6 inches above heat source.
Step 9: Pierce sausages all over with tip of knife. Arrange sausages on rack.
Step 10: Cover and grill until outside is crisp and brown, and just cooked through, turning occasionally, about 15 minutes.
Step 11: Transfer to plate.
Step 12: Simmer relish over low heat.
Step 13: Lightly toast cut sides of buns on grill.
Step 14: Place bratwursts in buns and serve, allowing guests to add pickles, relish and cheese.